Anker 621 Magnetic Portable Charger (MagGo). 5.000mAh Wireless Power Bank with USB-C Cable. Magsafe-Compatible Battery Pack for iPhone 16/15/14/13/12 Series

The magnetic portable charger at 100% charged my phone for just about 2 hours and 45 mins.
In that time it took my iPhone 14 Pro Max from 52% to 86% so the full amount of charge my phone got from the battery was 34%.
I was using my phone every now and then so it wasn’t just sitting there unused but I wasn’t sitting there scrolling as it charged.
It got warm within the first 30min but never got hotter than that.
The charger itself looks nice, it’s not too large I can hold my phone pretty comfortably with it attached.
At 40 dollars I’m not sure if it was worth it, but in a pinch it would definitely keep your phone from dying till you could get to a charger.
However it’s never going to bring it from 1% to 100% which is definitely something I was hoping for. Maybe that was unrealistic I don’t know.
Next time I might look for something a little more expensive to get something that offers a bit more power.

It’s okay for what it is. If you really want a good battery capacity then I’d recommend their 10,000 mah. This one it’s really 5,000 mah Anker even says it. The magnet strength is really strong. It’s very portable and the charging speed is good.

I’m extremely impressed with this Anker charger! The build quality is excellent — sturdy, sleek, and compact. It charges my devices super fast without overheating, and the cable connection feels very secure. Delivery was quick and the packaging was neat and professional. I’ve used many chargers before, but this one truly stands out for its reliability and performance. Highly recommend both the product and the supplier for their great service!

Worked great for our trip to florida on those long disney/universal days! Does get warm when in use. Small and compact. Slow charge. Magnet holds up good.

Great company that stands by their products!
I would recommend to do your research on the different charger watts. If you have a newer iPhone look into 20 watt chargers or higher for fast charging. This charger is 7.5 watts so it is considered “slow charging”.

I've had a lot of good luck with Anker products. That's why they were one of my first choices with I wanted to try a MagSafe battery with my iPhone Pro Max. This time, the results were a mixed bag.

I liked the size and magnet. The battery is small enough that I can still hold my phone comfortably when it's attached. And the magnet is strong enough that it doesn't shake loose when I toss my phone with it attached into my pocket or backpack.

The problem, and why I eventually returned it, is that it charges my phone more slowly than other MagSafe batteries I've tried.

You don't have to take my word for it. That's why my iPhone says when I attach it. It also doesn't trigger the MagSafe animation. That's probably because it's not a true MagSafe charger.

More to the point, it takes about 30% longer to charge my iPhone than other MagSafe chargers, where the issues I just mentioned don't happen.

I use it for a quick charge when I’m not at home and it’s been working perfectly well for that! The back of it does get quite hot though, which is slightly concerning, but there’s been no issues so far

Okay so it's magnetic enough if your phone case is magnetic. I have not tested it long enough to say it lasts however much long. But it works. It's slim and not particularly heavy so it's not cumbersome to handle.

Not a fast charger mag safe but it can get the job done n manage your battery. I been using it for 1 week and on a full charge it can charge your phone from 1% to 75ish% . Also around 85% it will start to get hot and your phone will stop charging until it cools down . Other than that its worth buy and I DON’T have any regrets . Ps a couple hard drop and it can start to show a few dinks n scratch . But the black one hides it very well

Looks definitely nice, but I regret this is not a fast charging battery it takes long to pass from one percentage to the next. Overall it’s small and practical for emergencies.

È molto carino piccolo e comodo, se lo usate il cellulare mentre lo caricate si surriscalda troppo. Ma è un altra carica del cellulare e quando esci in giro è molto comodo consigliato

I have an iPhone 13 Pro. I’ve used this twice. First was right out of the box (without charging it) it brought my phone from 45% to 100% in about an hour but it did die after. Used it again at around 40% and it fully charged my phone and still has two bars left. The device itself recharges fairly quickly. I have quite a few portable battery banks and this one charges the fastest. The other bank I have from Anker takes hours to charge but it’ll die quickly if I charge my phone on it. I don’t have a MagSafe phone case and it still stays on (doesn’t slide around or fall off). My case is silicone and plastic so it works through two layers. It gets slightly warm but nothing out of the ordinary for these types of chargers. For the price I’d say it’s a great buy. I love the color. It isn’t heavy either just adds slight thickness to the phone but still easy to use.

Just got this and it won’t hold a charge. No matter how long I leave it plugged in, it only charges 2 out of 5 bars (as indicated by the lights on the device). I tried charging my phone from 19% and it only charged my phone to 46% before running out of power. Will be returning it, as the defect doesn’t make it worth the price.

Update: While the issue persists, the seller did reach out to give me a full refund. They did not ask me to update my review. I appreciated this, so we are going from 1 star to 3 stars.

This is how my charger arrived. Clearly a returned, very used item. The tape on the package was clearly cut/torn. 😒 Getting a replacement sent but is ridiculous this was even sent out in the first place. And it is inconvenient to have to deal with sending this one back.

It has been a great addition to my everyday carry. It’s incredibly slim and lightweight—easy to slip into a pocket or small bag. The magnetic attachment works perfectly with my MagSafe-compatible iPhone, and the grip is strong enough to stay in place even while using the phone.

Not the best not the worst, slow charge with the wireless contact its a bit faster if you use with cable and at least it charges around 25-40% with one charge only talking about my flip6 dont know about other phones maybe my girls s25 ultra too. Not 100 percent but hey if you in a pickle it helps ive used it in 14 hour concerts for my flip5 and flip6 and works pretty good or when i forget to charge my phone at night and wake up with low battery, i always have it on my lunch bag in case i forget to charge my phone and no outlet next to me. I have forgot that i put it on the bag on my lunch bag and ill put on the freezer ive done it about 30 times and i left it on the car 110°a couple of times too and still works like a charm.

4stars only because i would love to be a fast charge 25w or at least to charge my phone from 1%- 100% with one charge
Works with my sumsung buds2 pro and buds3 pro as well.

I have an iPhone 14 Pro max, and this provides roughly one charge per day. I was hoping I got more, but I guess you need a bigger one for that.
Color is cute and overall looks good.

This power bank really saved me during a concert. Its charge usually lasts between 2 to 3 hours. So if you’re traveling, it can be a lifesaver—as long as your phone isn’t completely dead and the trip isn’t too long.

The ankor 621 portable charger is a great portable charger but the only complain I have about this is that it takes to long to charge and gets very hot. I recommend it for short charges on the go.

Capacity:
I’m okay with the capacity until we get to battery life…
Battery life:
the battery life is horrible because when you are NOT using the power bank it just depletes of power on its own without even using it throughout the day. So I have to keep mine charged throughout the day until I actually need to to use it for my phone. 

I used to have a $10 battery bank with the same capacity from $5 below and that one although much thicker, at least I knew it would keep its own charge until I needed to use it. That thing would last me a while just sitting there and keep its capacity. 

I’m really disappointed on this one from anker since I love their products but I’m thinking I either need to return this one or maybe I got bad luck and it was a faulty one ? Unsure…

This was my first Magsafe battery. I had some older Qi wireless chargers and was familiar with heating issues. But these were older and lower power. Without the Magsafe feature, they were finicky and fussy and didn't properly fit around camera lens protrusions. I barely used these devices.

This Anker 621 has a lot of promise. The Magsafe feature locks tight and the dimensions do not interfere with the camera protrusions, even with a case on the phone. It's compact and slim, and most importantly, does not require wires. It can be easily carried in a backpack or pocket without an accessory bag for wires and cables.

When I first unpacked the battery, I fully charged with with a USB-C PD charger. It charged at 1A/5V. I used it to inductively charge my iPhone 14 Pro intermittently over the next few days. After about 10% charge, I determined the heat buildup to be intolerable. Therefore, I only used the pack intermittently. That worked fine for me over several days. When the battery was empty, it took 20Wh to fully charge. The battery was advertised for 5000mAh, which is impossible to measure without disassembling the unit. However, we can calculate 20Wh / 5V / 0.9 = 4400mAh (where 0.9 is the efficiency of the voltage converter for USB). This is below advertised capacity, but there’s a lot of assumptions in the conversion.

Then I used a USB-C cable to charge my iPad Mini. It transferred 14.8Wh at about 9 Watts before exhausting. The round-trip efficiency was high, because recharging took 14.8Wh to fully recharge. I suspect I didn’t get the full 20Wh capacity with the iPad because the higher charge demand choked the battery before it could get fully empty.

Using the inductive charge mode, both devices get hot relatively quickly. The switching power electronics get particularly hot. I can easily feel where the transistor is located beneath the plastic shell. The inductive transmitter loop gets warm on the battery and the receiver loop gets warm on the phone. Lithium-ion batteries degrade proportionally to temperature (the Arrhenius relationship), accelerating +25% degradation rate for every 10C, this is bad for the phone.

In summary,

• The battery delivers 20Wh of energy. If using inductive (Qi and Magsafe), much of the energy is converted to heat, so perhaps only 10-15Wh is actually delivered to the battery.
• If using high-current devices using a charge cable, such as an iPad, the high current chokes the battery a bit early, stopping at 15Wh.
• My back-of-the-envelope calculation shows 4400mAh vs. rated 5000mAh. I suspect the battery is not delivering rated capacity. Anker should be rating these batteries in Joules (watt-hours) instead of Coulombs (ampere-hours).
• Inductive charging is inefficient, losing a quarter to half of energy to heat. This is not Anker’s fault but a result of real-world physics. With my iPhone 14 Pro, I saw about 10C rise per 10% of battery charge. I never let it progress beyond this point.
• Lithium-ion batteries accelerate aging degradation due to the Arrhenius relationship about +25% per 10C temperature rise. Therefore, prolonged use of inductive charging will ultimately age your battery prematurely.
• This battery is very worthwhile because I don’t have to carry an accessory kit with wires to use. Just slap it on the back of the phone and go. Plus, if frees the connector to use with wired headsets when using.

I was iffy about spending $40 for a mere battery pack. I was on the edge and it was hard to fathom spending that much on some little power bank. But I didn’t cheap out, and I went full send.

This was literally my best purchase ever for my iPhone 16. I’m completely appalled at how strong MagSafe really is (I’m a new Apple user, and didn’t think much of MagSafe prior), but now I see why people walk around with those weird MagSafe phone cases. The color is a very nice matte black, and has a smooth feel.

When I was an android user, I thought everyone was an NPC for walking around with their little MagSafe cases. I didn’t know what it was and never understood it until now. This was the best $40 I’ve ever spent.

On top of that, it’s compatible with AirPods and Apple Watches. It charges fast. Like I said, I didn’t get to play around with it yet, but it’s very promising. I’ll update when I do.

And when I say the magnet is strong, I mean STRONG. I can literally hold the Anker while it’s attached to my phone, and allow my phone to dangle. You literally can’t make it fall off on accident.

And my favorite part; portability and convenience. You have to turn on the Anker with the power button on the bottom, and that means that it won’t charge your phone until you turn it on. This also means that you can have it attached to your phone without worrying about it charging your phone and wasting battery. It’s literally INSANE. It feels no different in my hand when the Anker is attached. Honestly, this is the best $40 you can spend on your iPhone.

The bank only charges to 2 lights out of 5 after leaving it in a dedicated outlet with an Anker usb C to C cable for 3 days. First time I’ve ever had an issue with an Anker bank—was looking for a smaller 5000mAh to fit in a work bag, but I guess I’ll keep looking. Really disappointed but it’s not worth the hassle of sending it back.
——-
Update: Anker reached out and offered a full refund. Upgraded this rating to 3 stars for the outstanding customer service. Will definitely try a different version of the 5000 bank.

Works fast and great! The magnet is strong and feels secure without moving around. Even the color matches iPhone 16. Only downfall is that it’s a bit heavy to carry around in your pocket if you need something while hiking or camping but overall, I would buy it again if needed.

Great to have around, does what it’s supposed to but it only charges my 13 Pro Max to about 75% and takes SOOOO LONG to charge the battery back back up after use. Like WAY too long even on a laptops usb-c charger. Looking for another that may accept charge faster.

From 20% to 81% on the iPhone 15 Pro Max in ~3 hours. The phone was in low power mode while charging (up to 80%). The power bank was full before and empty after charging. I didn’t use the phone while it was charging.

So it’s cute. But it takes forever to charge then one charge session on a phone and it is dead. It gets hotter to the touch than I prefer and its magnet isn’t as strong as I’d had hoped. So it isn’t great.

The battery works with an iPhone 13 Pro Max but has two major problems:
1. It has no vertical magnet (the dark vertical line), or if it does it’s incredibly weak. This means the battery can easily rotate on your phone and disconnect. Not a deal breaker just incredibly inconvenient, and requires more regular attention and care.
2. It gets hot hot hot! I bought two of these and both get hot while they discharge. The phone is hot and the battery is hot, making holding the phone uncomfortable at times.

The official Apple battery packs, although they have a smaller battery size have none of these problems

This is a well-constructed product. It works as advertised. I'm extremely pleased with this purchase. Anker continues to shine as a quality manufacturer.

TL;DR: works well but the battery indicator is a bit confusing.

The Anker 621 has decent build quality and feels solid. It’s a bit thinner and lighter than my s/o’s Anker 622 but doesn’t have a stand as a trade off. It charges wirelessly as expected though does get a bit hot.

Overall I’m pretty pleased, the only one strange callout is that if you keep it plugged into a charging cable, (with the wireless charging pad facing up) the right most LED continues blinking giving you the idea that it’s still charging. However, the right most LED is just a charging pad indicator (letting you know it can wirelessly charge a device while the cable is plugged in—acting like a charging pad).

Only the four left most LEDs are the battery level indicator (which turn off when fully charged). This isn’t very intuitive and made me think the battery was bad from the factory.

Ho avuto la possibilità di testare l’Anker 621 Magnetic Battery (MagGo) grazie al programma Amazon Vine, e devo dire che sono rimasto molto impressionato da questa piccola ma potente power bank. La prima cosa che colpisce è la sua compattezza: con un design sottile e leggero, è facile da trasportare e non aggiunge peso significativo quando è attaccata all’iPhone.

L’aggancio magnetico funziona alla perfezione. Si attacca saldamente al mio iPhone 13 Pro e rimane ben saldo anche durante l’uso quotidiano. Non ci sono problemi di disconnessione accidentale, il che è una gran cosa per chi vuole continuare a usare il telefono senza interruzioni mentre lo carica.

La capacità di 5000 mAh è sufficiente per una carica completa del mio iPhone, con un po’ di carica residua. Non è pensata per ricaricare il telefono più volte, ma è ideale per dare una ricarica completa quando si è in giro e non si ha accesso a una presa elettrica. Inoltre, grazie al cavo USB-C incluso, è facile ricaricare la power bank stessa in tempi relativamente brevi.

Un altro aspetto che ho apprezzato è il design elegante e minimale. Si integra perfettamente con l’estetica dell’iPhone, senza sembrare un accessorio ingombrante o fuori posto. È disponibile in vari colori, quindi c’è anche un tocco di personalizzazione.

In conclusione, l’Anker 621 Magnetic Battery (MagGo) è una soluzione eccellente per chi cerca una power bank portatile e affidabile per il proprio iPhone 12 o 13. È perfetta per chi è sempre in movimento e ha bisogno di un po’ di energia extra durante la giornata. La qualità costruttiva e le prestazioni sono all’altezza degli standard di Anker, e non posso che consigliarla vivamente.

Spero che questa recensione ti sia utile!

This thing is great, when you need a quick charge, and you don’t have a charger port, but it gets too hot, way too fast, and I mean so hot it might be like 85° in your hand, if you were outside a hot day, I’m sure it would be dangerous for your phone, and to have the battery on it getting hotter. if my phones like 20%, it doesn’t get it past 70%, even on a full charge. Even when it’s fully charged, it does not fully charge my phone all the way, unless it starts at 50%. So it seems like it gives you half a charge or so, even though it should give a full charge! It’s definitely good for quick on the go purposes, but I wouldn’t expect it to be the best option. You’re better off with the battery bank, and just plugging it in. It is, however, one of the better MagSafe chargers out there as far as I know. I would say, if you have the money to blow, buy one, but don’t expect too much, and monitor your phone temperature. I just wish it was better, but still I give it three out of five.

Anker makes great products but this one is a let down. It charges extremely slow, gets very hot and the mag feature is weak. A let down from Anker.
**Update** Anker reached out and resolved my issue with their excellent customer service. This is a great company that stands by its products.

Ottimo caricatore, su iphone 13 riesce a fare una ricarica completa, ma scalda molto, per caricare ci vuole parecchio tempo ed il telefono senza internet attivo riesce a carica Un po piu veloce ma comunque rimane sempre caldo

It’s perfect! My husband ordered it for me and it’s just the right size for my lady hands! The color is adorable! And it arrived with almost a full charge! I love it! It’s works great!

7.5W charging speed. Charged my iPhone 15 Pro from 20% to 45% in 30 minute, then to 61% after another 30 minutes. So about 41% per hour. My desktop 7.5W charger does about 45% per hour, so this battery is pretty close.

The battery gets hot while charging which slows the charging speed. I measured the temperature of the battery to peak around 119°F using an IR thermometer.

One odd thing about this battery is that it's slightly longer than it should be. So when it snaps onto the back of the iPhone 15 Pro, it extends a few millimeters below the bottom edge of the phone (see pics). Not a big deal and doesn't affect charging, just something I noticed. Dimensions are 105mm x 66mm x 11mm, weight 134g.

The battery capacity is 5000 mAh (iPhone 15 Pro internal battery is 3274 mAh), but only about 70% of that goes into the iPhone due to the lower efficiency of wireless charging (Magsafe, Qi, Et al.) so expect about one full top up with this battery.

I’ve got a 14 Pro and the battery pack sticks out past the bottom of the phone, which is annoying for the price. Definitely could’ve been better designed. But the functionality isn’t great: I continue to get a temperature warning on my phone when the battery pack is in use, making it unusable. I’m normally a huge fan of Anker stuff but this isn’t it.

Great if you’re looking for convenience, it MagSafe to the back of your phone, so you never have to worry about bringing a cord with you. That being said it will not charge your phone full charge. It dies very quickly, but it’s very convenient to not carry a cord. I love anker as a brand so I would definitely re-purchase

Purchased the Anker Magnetic Portable Charger, it works pretty well and charges fast. The only thing is it gets hot when charging which is kind of concerning.

Very slim and really light weight. Perfect portable charger in my opinion. Small enough to fit in your pocket and its so light you don't feel it when you its attached to your phone or when in your pants pocket. i take this charger everywhere i go. Anker charges my phone kinda fast and does not over heat! In the pictures above my phone battery level was at 9% and it took over an hour to charge only bc i kept taking it off to show my coworkers the charger. With only having my anker charging level at 75%, it did pretty well on charging my phone at 45%. The charger does have a nice smooth texture feel to it. Overall very happy with it and will be gifting these to friends!

I was able to get it out of the box and use it right away. It charged super fast and charged my phone perfectly. It's exactly as described on Amazon's website and was perfect for the amount of use I do in a day.

Habe die powerbankk jetzt seit ein paar Wochen. Sie hält magnetisch wirklich sehr gut und ist angenehm dünn. Auch die Kapazität ist erstaunlich gut. Das Design finde ich nicht ganz so schön wie beim Apple Original, dennoch finde ich die powerbank in meiner bestellten Farbe weiß durchaus ansehnlich. Das Material ist aber relativ anfällig für Fingerabdrücke, das fällt bei der weißen Variante nicht auf allerdings befürchte ich, dass es bei der schwarzen Variante deutlicher sichtbar sein wird. Auch die Rückseite (die am Handy anliegt) ist aus einem schwierigen Material. Es ist weich und fühlt sich hochwertig an, ich habe aber das Gefühl, dass man das Material leicht beschädigen kann, hier sollte man also aufpassen. Auch die Größe sollte beachtet werden: Bei iPhone 13 steht die powerbank leicht über, erst ab 13 pro Max passt sie ganz genau. Den minimalen überstand empfinde ich aber keineswegs als störend, höchstens bei Mini Modellen stelle ich es mir störend vor. Zuletzt noch ein Wort zu Hitzeentwicklung: In den Rezensionen stand oft, dass sie unangenehm heiß wird. Ich kann das nicht bestätigen, sie wird warm, aber nicht heiß und ich empfinde es eher als einen begrüßenswerten Handwärmer. Alles im allem bin ich sehr zu Frieden

I charged the product as soon as I received it, but it seems like it won't get fully charged. The first and last lights are blinking and it never changes. I did try it anyway to see if it would charge my phone, but when I tried to power it on, it just turned off automatically.

An update with my order, The product malfunctioned, but the customer service team handled the situation with exceptional efficiency and professionalism.
Thank you.

This Magsafe battery is the perfect size for throwing in your jeans pocket and taking it along for an additional Battery Charge. I love the light weight of it and the slim feel as well. It will not add too much weight when attached to your phone and doesn't get in the way with normal use of your phone when its attached. The only setback for me was the fact that the charge is slow, like really slow. I am using it with a Samsung Ultra S24 Magsafe case so that can be the reason why. I think using this for an iphone with Magsafe will produce better results.

Excellent product, it works very well with the Apple MagSafe case. You can carry it without problem in the pocket. The Anker package is excellent as always

I have an iPhone 15 pro max and I like how I can get a decent charge from low battery. It charges fairly quickly but I like how it snaps to the back of my phone case, out of the way. Phone is slightly heavier with the battery on the back but that’s to be expected. I would recommend it for those on the go who need a portable charger free of the cables.

I love the idea of this and the MagSafe attachment part works great! And the purple looks great with my case and it still works with my MagSafe phone grip. It’s slim and fits so nicely in my purse or pocket! Unfortunately the charging rate is so slow, it’s never useful. I feel like it mostly keeps my phone alive for a bit longer instead of actually charging it, even with my phone in airplane mode and left untouched for an hour, I barely get more than 15% charged. I thought Anker would be a bit better than that, but I’d just rather use a charger with a built in fast charge cable and get a real charge out of it.

I love this charger! It will charge my phone multiple times which is nicer than our similar charger from Apple. It does get hot on occasion. I try not to be watching videos or have too many apps open while charging because it seems to make it hotter. The size is just a little too long to fit perfectly on my phone and sticks out slightly over the bottom lip of my case whereas the Apple charger clicks perfectly.
More charges, less expensive, cute lavender, but fitting slightly too big vs one charge, more expensive, white only, but perfect fit.
Overall the Anker is the winner for me.

I just received this portable charger & did a small test for about 15min. I use a popscoket on my phone case so I obviously have to take the whole case off but I will not care. I am going on a trip the beginning of February & will def most likely need it considering the destination. When I first put on charger it went down 1%, idk why, could’ve just been my phone doing that in general, Within the time of this small 15min test, yes my phone did get real warm & went up 5%. Within 10 ish minutes using phone after the small charge it has gone down to 44%. I will update review when I get back from trip with the real use I’m hoping to get out of it.

This is a good product to get for travel or if you are away from a wire for a long time. Has enough capacity for my IPhone 13 Pro. Magnets are strong and it stays on pretty good, even with a case. Charging speeds are a little slow but that can be expected from a wireless charger. Only problem I have is this gets really hot. My phone starts to burn up even when I am not using it. The phone gets so hot that it stops the charging.

I like the anker charger. It attaches pretty good and charges cable free. It also seems to charge pretty fast too. It did get hot after a while. All and all, happy with it.

This is not the best product but not the worst the only cons I have is the battery pack heats up the whole phone and if u add that with body heat from being in ur pocket it gets extremely hot Next charge time takes 2-3 hrs to charge on my fast charger.. and it only really maintained my battery and added maybe 20% if that OTHER THAN THAT it was very thin convenient lightweight had a strong magnet was well made it’s not bad at all just wasn’t for me

I love this little thing. I don't need it toon often, but it's super convenient when I do. It charges pretty fast. It does get a little warm, but that's typical with magnetic fast charging. I wish the magnetic adsorption was just a touch stronger, but it's still really good. And I stuck a PopSocket on there to give me a better grip, and that works really nicely!

Will show charging indicator when I place my iPhone 15 pro max then it stops charging after a couple of seconds. Not even sure if the battery pack itself is charging properly because lights just keep blinking. Very disappointed since anker was always my go to brand

Anker reached out and fixed the issue 5/5 customer service

This is the perfect MagSafe battery. Low profile and light weight which make it almost unnoticeable on your phone while attached. The magnet is one of the best if not the best MagSafe magnet I’ve dealt with to date. I don’t think it could get any better.

The only thing that keeps this from being perfect is the amount of time it takes to charge the battery itself. It’s not a deal breaker by any means but I wish it charged a little faster for those last minute tip offs.

If your looking for a great MagSafe battery for your iPhone this is a no brainer purchase you won’t regret!!

very happy with this - so much that we got two more.
It automatically starts, charges really well - even with hotel/home wall USB-A > USB-C outlets unlike the massive power banks - and attaches great to our phones (12, 12 mini, 13 Pro, 14 Pro, and 15 Pro Max).
Remember, though, that it's best to use a MagSafe-compatible case, or it will fall off...

Note: Photos are taken with the chargers on an iPhone 15 Pro with a Mous Limitless 5.0 case.

Size:

The 621 is thinner but longer than the 321 which, as the product description states, means that the 621 extends (slightly) past the bottom of a non-Max iPhone Pro (tested on a 13 Pro and a 15 Pro). However, for both the 13 Pro and the 15 Pro, once the case was on (Mous Limitless 4.0 on the 13 Pro, Mous Limitless 5.0 on the 15 Pro) the 621 was basically even with the bottom of the case. It may extend past the bottom of a lower-profile case. The 321 does not extend past the bottom of the case but is a bit thicker.

The 321 is a couple of grams lighter than the 621.

Appearance:

The 321 has a smoother, glossy-ish finish but seems to show more scratches when tossed in a backpack pocket with keys. The 621 is a more matte finish and not as slick, which may be a benefit from the standpoint of grip but shows fingerprints more easily. Both chargers are about the same when you put the phone in/take it out of your pocket (occasionally comes loose, depending on how tight your pockets are, but not often). Despite the more rounded edges of the 321 the 621 seems a bit easier to put in a pocket without catching it.
The 321 has a round “power” button with inset 4-light charge level indicator on the face of the charger case. The 621 has separate “power” and 4-light indicators on the bottom (either side of the USB-C charging port).

Notes:

Both have the same nominal capacity and seem to charge at about the same rate. Both allow you to charge a non-MagSafe compatible device (or if you have a non-MagSafe case) using a USB-C cable (provided the charge requirements are similar enough to the iPhone). When attaching to a MagSafe phone/case both start charging the phone automatically, but if using a cable you have to click the “power” button after plugging the charger into the device to activate charging.

I paid about $30 for the 621 ($35 less a $5 promotional coupon) and $25 for the 321. Overall I prefer the 621 as the finish seems higher quality and I prefer the thinner box. However, a $5 price difference makes it about a wash (I would still probably get the 621), but at $10 less the 321 is the winner.

I love how thin it is and the sleekness of the design. I took a pic of it next to a mechanical pencil as well as my iPod pro case to reflect it’s true size. Fits nicely on my iPhone 14 Pro Max. I charged for it for exactly one hour and my phone went from 16% to 48%. Not the fastest charge, but it does what it needs to do. Took away one star for the slowness of the charge, and how warm it gets while charging.

Anker always delivers! I have a 24k power bank for my MacBook and other electronics. This wireless portable charger is perfect for my iPhone 12 Pro Max with MagSafe case to match! Go get yourself one!

Unless you want to damage your iPhone I DO NOT RECOMMEND this battery pack! I only had it on my IPhone for a few min and it got hot to the touch! I am sending this back. I’ll stick with my Apple MagSafe battery packs. I even charged this battery pack over night and the bars didn’t even show full. I’ve always liked anker products, but this one is a dud. Customer service did make this right, likely just got a defective one and they did credit my acct back after I returned the item.

It’s great charger if you are an office person and you’re not out in the 75 to 100 degrees. In cooler temps the anker mag safe charger will work on its still get fairly warm around 90 ish degrees. Touch able. But if your out in a work site out in the heat all the time I don’t suggest it at all it get to hot to the touch and cause my phone to over heat.

I don’t review many things. But, this charger is designed super well. Strong Magnet, works as described, and looks great. You can keep it on your phone and turn it off while still attached if you want, so you don’t have to carry the thing around like a big brick, it just stays on your phone. You can charge it while it’s on your phone too, which charges both your phone and the Anker charger as well. And wow, this magnet is strong. It’s strong enough to hold the weight of my phone if im just holding the charger. Works well as a grip too for those of you that go caseless and are worried about dropping your phone. Not to mention that this thing is only $40 too. Some of the best money I’ve spent. Only thing that could make it any better is if it had a magnet on the back to attach to a stand or something for hands-free in the car. Overall, if you’re looking between this and another charger like it, I’d say this one is a no-brainer.

It gets hot while using it, but if you search it on anker.com it'll say it's totally normal. If it's charged to 100% it can get your phone to more than 80% of battery. It fits anywhere, in your pocket or in your purse. It's very comfortable because you can still use your phone while charching it cause you won't even feel it's there. 20/10! It's amazing!

This lavender color is really beautiful in person and the power bank feels very high quality. I just received it today so can’t speak to longevity. It is a little heavy though, when I stick it to my phone directly, it magnetizes very well and will not fall off easily, but I have a non-MagSafe iPhone case and if I attach it to that, it clings lightly but will fall off if I just hold the phone.

I can’t begin to describe how amazing this thing is, the charge last forever. One time we charge two iPhone’s and a pair of Apple earbuds , with one charge. Highly recommended. 👍👍👍

Works as expected, I can charge my phone 1/2 times from this. I wish it had more capacity, but it would mean a bigger charger and I like the size.

It does get a bit warm and I would still suggest using a cable, if it gets offset from the phone it won’t charge.

This works great. It’s a bit heavy, but most portable chargers are. It snaps on cleanly stays put, but it’s easy to remove- which comes in handy because it does run a bit hot. I recommend using it when you don’t need to also be holding your phone.
It charged my phone from 20% to 60% in about an hour. I was using my phone during that time, and I expect it would charge faster/more fully if you don’t use your phone while it’s charging.

Aesthetically, it’s apple-esque. I actually like the soft touch material so it’s easier to hold, and the blue is close to my iPhone, but not an exact match.

So, full disclosure!! I do not use or prefer iPhone at all! I am an Android guy all the way. That being said... I am a hugh fan of the MagSafe concept and I have been using a MagSafe case for my Samsung S21 Ultra for a while now and really like it.
Sadly, this did not work well for that! It did work fantastic for my daughter's iPhone 13.
I may possibly be moding my phone to an integrated MagSafe setup and will retest this then!

Funcional para viajar, no pesa mucho y tampoco es incómodo, pero la parte más importante y por la que estás aquí es: la carga, tengo un iphone 13 y m experiencia es que si, te ayuda a resolver en una urgencia pero la carga es un poco lenta y siento además que se calienta demasiado ;/

Great little charger for on the go cordless charging! You can absolutely use it with an android as long as you have a magnetic case. My case is the Peak Design Everyday Nylon Bumper Case for Google Pixel 6 Pro and it sticks and charges perfectly. It does only charge at 7.5w and gets a bit warm, but nothing crazy.

I was disappointed that item was delivered late. On initial date, which was promised. I received email stating delivery would be a few days late. That would have been okay had I not needed by the initial due date. Amazon could not cancel order because it was in transit to be delivered when I called to let them know I would be out of town for a few days for fear it might get stolen. I spoke to an Amazon supervisor who made things right. Order could not be cancelled but could be rescheduled. I still don’t understand why delivery company could reschedule but not just return it. Delivery company emailed to let me know it was being delivered two days after initial due date. I called Amazon and reschedule for the follieing day when I’d be home from trip.

With respect t to Battery pack,

Cons: battery pack and iPhone 14 Pro Max heated up and took over an hour to get from 86% to 89% charge. Very slow.

Pros: compact and magnetic strip works great! 😀 weight is not bad fir my needs. It’s all relative to individual discretion about what is and what is not heavy.

Very sturdy battery pack. Product was secured in its box, very well packaged. The downside for me is the speed. However it’s sturdy & compact sized and weight is fine for me.

If you are concerned about the heat, do a web search.

If you are not concerned about slow charge I recommend The Anker.

With regards to delivery date being unexpectedly delayed and you need a next day delivery know that deliveries may be delayed by uncontrollable conditions such as weather, etc.

Again Amazon made things right and I have no complaints about Anker.

My iPhone 12 Pro's battery is at 80% battery health, and I'm willing to wait one or two more generations before replacing my phone. It's mostly fine, but there are some days when I'm out all day, having this magsafe compatible battery is the best! You can still comfortably use the phone as it recharges.
It recharges a bit slower than I thought, but other than that, it's the best portable charger I've ever owned.

I actually bought the Apple MagSafe Battery Pack to compare with this charger for my Iphone 14 Pro and I'll be judging it based on a variety of factors:

Price: Anker wins. $37 vs $99 makes it almost 3x cheaper.

Size and Weight: Tie. Surprisingly very similar to Apple in weight. The thickness is pretty much the same which is the most important as you want to be able to use it comfortably while holding the phone and charger. Anker is a bit longer and very slightly wider, but this doesn't really make a difference as it fits on the phone.

Looks and Feel: Apple wins. The Anker feels nice and grippy, but Apple's form factor definitely wins out. I notice that fingerprints definitely show up more on the Anker and not really at all for Apple. This is the least important category for me.

Battery Life: Anker wins. Apple notably doesn't list its battery life for its charger, but it's definitely less than 5000mAh. 5000mAh is enough for a little more than a full charge for my Iphone 14 pro and from my testing (charging up from 10% to 100%), Apple capacity's seems to be about 55-65% of a full charge.

Charging Speed: Tie. They're both pretty slow, but that's a given for wireless magsafe charging.

UI and Battery Advantages: Apple wins. Apple's charger is obviously designed to work with Iphones and it shows with the audio cue for charging, the visual popup for charger percentage, and the ability to charger the battery pack while charging the phone. It also manages heat, stopping if the phone gets too hot and let's you know it won't charge beyond 90% to preserve battery life. Anker has none of that, only a light indicator for battery life and it will keep on charging until it's done. It hasn't gotten unbearably hot, but I would keep to charging in bursts.

Magnet: Apple wins (slightly). I held my phone by the charger for both and shook it side to side and up and down and they both held firm. However, for some reason, Anker's doesn't seem to have the small magnet under the circle one like Apple does. This makes it so you can slightly turn the charger, but this doesn't really matter.

Conclusion: My personal preference is the Anker. Apple's small improvements really aren't worth being 3x the price. I value being able to hold the phone comfortably while charging and knowing that the battery will last me through the day if I forgot to charge my phone last night and Anker does that, arguably even better than Apple does. Heat isn't really an issue for me because I only charge in short bursts of time anyway (~30 minutes). Apple's charger pack is meant more for keeping your battery topped up so it only drops a bit during the day, not for charging up from a low amount which isn't my preferred use case.

This is an excellent backup battery for travel. It brings my iPhone 12 Pro from dead to almost 100% while I’m using it. It’s thin enough to fit in your pocket while you’re charging your phone and it’s magnet is strong enough to prevent it from falling off while being used or removing it from your jeans pocket. Anker makes good products.

A few weeks ago I bought Apple’s MagSafe and wasn’t happy. So I thought I’d try Anker 621 and test them both.

I tested both by dropping by iPhone battery to 50%. The Apple MagSafe took 1 hour 30 minutes to charge phone up to 91% and the MagSafe was at 0% power. I did the same with Anker 621 and after 1 hour 30 minutes it also changed my phone to 91%, but the Anker still had about 50% power left.

Overall I’ve had better and longer charging life with Anker compared to Apple which I didn’t. I’ll use the MagSafe as a backup.

When having a portable battery it’s not about how fast the device gets charged. But that it gets charged in emergency. I typically only need this in case I forget to charge my phone the night before (which I do often). It charged my phone from 50%-100 in a few hours . I only starting charging at 50% to see how the charger does while I was at home. I’d trust it completely while out on the road with me. And it’s slim and portable enough to have attached to MagSafe and not be to bulky. Still fits in pocket with phone attached . And charging the battery pack itself charges QUICK. Hope this helps future buyers

Good quality and function, but few good use case scenarios. I did not experience any of the heating issues reported by other reviewers.

Pros:
1. The item is well made. The type of plastic and overall construction makes this feel like a premium item with no flex or loose parts. It has a sort of satin finish that is matte and looks very nice as well
2. You are able to charge items through the USB C port

Cons:
1. Charging is quite slow. While using this battery you should not be losing any charge, but any increase in battery percentage will be slow and hard to notice
2. It is quite heavy. When attached to your phone, the weight difference is very noticeable. I think it is too big to comfortable carry in a pocket, especially attached to your phone
3. Though it is slim, the battery is also a bit bulky. When attached, it doubles the thickness of your phone. On my iPhone 14 Pro with a thin case, the battery hangs a fraction of a centimeter over the bottom and it is noticeable if you rest your phone on your pinky
4. Because of its weight and size, it begs the question, “why not use a bigger and faster traditional portable battery with a cord?”
5. While the finish of the material is nice, it will show every fingerprint and bit of moisture. Something to keep in mind if this sort of stuff bothers you

This is a very nice charger, I love the slim design, it’s light weight, soft touch the color is nice. My phone hasn’t been completely dead to see if I get a full charge but wen I do charge it it charges fast, (charging a iPhone 14pro). Would definitely recommend this charger 10/10

I like this battery pack a lot, but a couple things keep it from being 5 stars. 1 - It doesn’t charge very fast. Not a big deal, but you’ll def have to leave it connected longer than the standard Apple version. 2 - It’s too long for the standard size iPhone 14 pro, even though it says it’s made for it. The pack hangs off the bottom edge of the phone just slightly - with or without a case. It’s a little thing, but it definitely feels wrong when holding it.

Otherwise I really like this pack. The magnet is really strong and holds well, the color and finish are nice and clean and I like that it has a power button so you can charge other things, not just wireless devices. I’ve used it 2 days in a row to top up and I really like it.

Charging power is good definitely will be full 100% around a hour. One thing is if you have any type of magsafe case the battery magnets stick a lot better to the phone.. the battery pack itself has good amount of charge.

Der Anker 621 ist zwar deutlich flacher als sein Vorgänger, steht allerdings bei nicht-Max iPhones deutlich einige Millimeter über den unteren Rand über.
Etwas schade, dass dies auf den Produktfotos leider überhaupt nicht klar ersichtlich ist, sonst hätte ich mich eventuell vor dem Kauf anders entschieden.
Für iPhone Max allerdings sicher eine tolle Option, das Design ist schlicht und die Powerbank wesentlich schicker als frühere Generationen.