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
$9.99
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Product description
1 Backup Power
2 Magnetic Charging
1 Compact Power
2 Charging Tips
3 Compact Power
4 Scratch Protection
Why is my power bank providing fewer charges than expected?
The capacity reduction during charging is due to a 30% to 45% energy loss in the battery cells and conversion circuitry. Therefore, a fully charged Anker A1610 Battery (PowerCore 5K) offers an estimated 2,750mAh~3,250mAh to power devices.
How can I estimate the number of charges for my device?
To estimate charging cycles, use these formula:
(Power Bank Capacity × 0.5) ÷ Device Battery Capacity ≈ Number of Charges.
For instance, charging a 3,000mAh device using a 5,000mAh Wireless power bank would offer approximately 0.83 charges.
Why does charging stop at 80%?
Your iPhone may automatically stop charging at 80% to protect its battery from overheating, as part of iOS 17’s thermal management strategy. Charging will resume once the device cools down. Moving it to a cooler spot can help speed up this process.
Why is my phone overheating?
It’s normal for devices to warm up slightly during wireless charging, particularly with heavy use like extensive gaming or streaming. Rest assured, this device meets international safety standards for safe operation.
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Customer Reviews
4.3 out of 5 stars 16,819
4.3 out of 5 stars 971
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4.5 out of 5 stars 2,836
4.6 out of 5 stars 3,123
4.4 out of 5 stars 6,572
4.4 out of 5 stars 2,210
Price
$39.99$39.99
$41.24$41.24
—
$39.99$39.99
$49.99$49.99
$59.49$59.49
$59.99$59.99
Series
Basic
Qi2
Qi2
Zolo
Zolo
Premium
High Cell Capacity
Recharging Time
~2 Hours (12W）
~2 Hours (12W）
~2 Hours (15W）
~2.5 Hours (20W）
~2.5 Hours (20W）
~ 2.75 Hours (20W)
~ 2.5 Hours (20W)
Size
4.13 x 2.62 x 0.45 in
4.02*2.78*0.34 in
4.09x 2.77x 0.56 inches
4.15 x 2.72 x 0.81
4.07 × 2.72 × 0.83 in
4.22 x 2.71 x 0.78 in
4.21 x 2.62 x 0.71 in
Weight
129g/0.28lb
4.30 oz
199.8g/7.05oz
8.46 oz (239g)
7.87 oz
250g/8.8oz
218g/7.7oz
Battery Capacity
5,000 mAh
5,000 mAh
10,000 mAh
10,000 mAh
10,000 mAh
10,000 mAh
10,000 mAh
Output Ports
Magnetic, 1xUSB-C
Magnetic, 1xUSB-C
Magnetic, 1xUSB-C
Magnetic, 1xUSB-C
Magnetic, 1xUSB-C
Magnetic, 1xUSB-C
Magnetic, 1xUSB-C
Compatible Devices
iPhone16 /iPhone15/iphone
iPhone16 /iPhone15/iphone
iPhone16 /iPhone15/iphone
iPhone16 /iPhone15/iphone
iPhone16 /iPhone15/iphone
iPhone16 /iPhone15/iphone
iPhone16 /iPhone15/iphone
Smaller Than Ever: Anker’s new MiniCell technology delivers identical charging performance with fewer components. This means it’s smaller and lighter than ever before
Pocket-Sized Power: Slim enough to snap to your phone and slip into your pack, purse, or pocket.
Strong Attachment: Equipped with ultra-strong magnets that firmly attach to the back of the iPhone 15 or 14 so you can single-handedly take selfies, make calls, and more.
Charge in a Snap: Align your iPhone and battery with a snap. Say goodbye to disconnection issues caused by wireless charging misalignment. (Note: Slight heating due to efficiency losses in the conversion circuit is normal.)
What You Get: Anker 621 Magnetic Battery (MagGo), 23.6 in (60 cm) USB-C to USB-C cable, welcome guide, worry-free 24-month warranty, and friendly customer service.
13 reviews for 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
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$9.99
S. Moore –
Compact, Portable, No Wires, Gets Hot!
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.
WhatsInAName? –
Great little bank
Great charging bank. Like that I can charge with cable or MagSafe. Recommend cable since MagSafe gets hot and charges much more slowly. Recharges pretty quickly.
Tammy –
Love how slim this is!
This portable, magnetic charger is perfect in the summer! I run GameChanger, which is a scoring app for baseball, and it really zaps your battery. I can slap this little charger on the back of my phone in the morning and keep up my battery life all day, even after several ball games and come home fully charged. It’s pretty impressive! It will get warm while charging so you may have to disconnect occasionally if it is already hot outside so that the phone doesn’t get overheated. I have since bought one for my husband and my mom. Great product!
Isaias –
Good and reliable
This battery has honestly changed the way I travel. It only charges my battery up to 70% but for me that’s more than enough. The slim design makes it easy to carry to the point I don’t notice I have it in my pocket. I’m giving it 4 stars only because the battery does get hot but besides that I like it
Ramennoodlesss –
Good for travel
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.
Danielle Boyd –
Works with my Samsung ultra 24
Works for my Samsung ultra 24I like it but I feel like it take forever to charge and I’ve never cared .much for wireless charging as it charges my phone(s) slowly. However it’s a good back up way to keep my phone charged and not feel like like I’m a leash
McGuireTwo –
It works
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.
Miina Shongolo –
Excellent Quality and Fast Charging — Highly Recommended!
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!
OtterlyBelle –
Slim, with a good magnet and the charging goes through my thicker (two-layered) protective case which my other one doesn’t. Very satisfied!
David A. –
Lo compré para mi mujer y está muy contenta con la batería externa. Trae suficiente carga para recargar su iPhone una vez (y sobrarle algo).Al ser pequeño y con MagSafe, pues cumple con todo.Buena calidad de construcción
Vineeth –
Product is light weight and slimmest powerbank in the market.material feels very premium. Magnet has good power to hold the mobile.
Edwinlaw –
Amazing and I love the colour. I can even use it as a wire charger for my AirPods and not worry about it sliding off the patch it has magnets
Terrence –
Although its limited to 7.5W of wireless charge, its very convenient for that extra boost to keep going. Sure there’s heat, but that’s basic physics. Anyone looking for a minimalistic EDC needs this. The silicon backing that mates to your phone provides good contact and the magnet is strong. Slim design makes holding your phone and the power bank very comfortable. Even on an S24+, the battery works well. Looking forward to trying out the 10mAh slim wireless power bank.