Anker Power Bank, 321 Magnetic Battery (PowerCore Magnetic 5K), 5,000mAh Magnetic Wireless Portable Charger, Compatible with iPhone 16/16 Plus/16 Pro/16 Pro Max, iPhone 15/14/13/12 Series

This Anker 321 Magnetic Power Bank is a brilliant little backup. It snaps securely onto my phone with a strong magnetic hold and charges quickly without overheating. The size is perfect for pockets or travel lightweight but powerful enough to give my phone a full top-up. Typical Anker quality solid build, dependable performance, and no fuss. Highly recommended if you want a compact, fast, and trustworthy magnetic charger.

I bought this to augment an old 12mini with a 75% battery. They magnetise together well through apple case and its like leaving it on a wired charging panel. If you leave it attached beyond 100 I found it bleeds away the rest of the store so it's not quite like a case with a battery. It's not too heavy and it feels very sensible and practical. It does somewhat defeat the object of the 12mini size ....but used sparingly it tripled battery life. We also tried with a 13 pro max. It didn't add much weight relatively to this much bigger phone and it came in very handy over the course of a long day event with lots of photos etc. It probably doubled the life. It also works particularly well on my older samsung S10, so much so I have ordered a magsafe case to attach it more securely. If you use it with a cable it seems to work like a very efficient power bank. Takes ages to charge which is a bit of a chore. 4.5 stars for performance, 5 for quality and price.

Pretty great unit, very compact and fairly quick to charge, nice strong magnet. Only downside is the relatively slow charging speed compared to a wired battery pack so unless you have ample time to use it.

Ideal size to stick on the back of your phone and not making it chunky, really good quality with a strong magnet, charging is in reasonable speed and gives you power for a whole changing circle! Its not too heavy

The best portable charger I've used due to its lack of cables and accessories - you just stick it on and go! Of course, while the size makes it really easy to carry around and to keep your phone in use with it attached, it does also mean that it only holds about 1 full charge, but that tradeoff has been totally fine for me. I bought this particularly for a city break, andfound it was ideal for carrying round in my pocket all day then giving my phone a boost after lots of google maps / camera usage, then I just charged it back up overnight ready for the next day. One thing to note is that it can get very hot while in use, particularly if kept in your pocket! This has been fine so far, but wherever possible I try to keep it out on a table or in my hand to mitigate this slightly. All round great product though - decent charge speed for what it is, lightweight and slim for portability, battery indicator which is handy, good magnetic connection, and pleased it comes in interesting colours other than just black!

Can be useful, though quite slow to charge, faster, lighter and smaller models now on the market with 15w charging (twice as fast) on compatible phone. Gets quite hot as well during charging. A good brand and quality though on the plus side.

So, I recently snagged the Anker Power Bank, the 321 Magnetic Battery (PowerCore Magnetic 5K) version, and let me tell you, it’s like finding the missing piece to my tech puzzle I never knew I needed! This little gem packs a 5,000mAh punch, enough to keep my phone happily juiced up through binge-watching sessions or endless scrolling sagas. What really sold me was the magnetic feature. It’s like playing matchmaker between my phone and this power bank – they just clicked! No more fumbling with cords that play hard to get; this is the kind of relationship simplicity I’ve been dreaming of. It’s sleek, not too bulky, and carries the charm of being my emergency lifeline when I'm out and about. Whether it’s for capturing those spontaneous moments or ensuring my playlist never ends, this power bank has become my go-to buddy. In a nutshell, if you're on the lookout for a reliable, magnetic, and stylish power bank that sticks with you (quite literally), the Anker 321 is your match. It’s a little spark of joy in the tech world, and my phone definitely agrees!

First of all this is very convenient, easy to fit phone and charger in your pocket. Very handy when I need to go out, to walk the dogs for example, and realise my phone is nearly flat. Very neat looking piece of kit and light enough to barely notice it. On the downside, as others have said it does get hot and sometimes to the point the phone stops itself charging until it has cooled. Secondly, it doesn't charge a phone up that much, maybe 50-60% max for an iPhone with new battery. Not sure what I was expecting and I suppose it is just enough for emergencies. If you are likely to need a full charge you will need at least 10,000mah power bank but then that would be much bigger/heavier.