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

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”.

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.

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.

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.

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.

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.

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.

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!

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

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.

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.

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 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.

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.

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!

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. 👍👍👍

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!

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.

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.

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

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

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.