TNTOR 2500mAh Portable Power Bank-4mm Thinnest Smallest Lightest Power Card, Built-in Micro-USB Cable with iPhone Adapter, Wallet & Pocket Sized Powercore (for Micro-USB Android & iPhone)

This is not much thicket than a credit card and fits easily into my wallet without any excess bulk. I have used it to top up my iphone on several occasions and charges very quickly.I cannot yet comment on the durability but so far no negative issues.

I bought this to carry around with an iPhone SE with a failing battery. It is super slim and the built in lead is cool. But the little adaptor for the iPhone simply does not work reliably. It begins to charge and then stops. I have tried different angles & orientations with phone locked and unlocked but it just doesn't work. Shame.

seemed to charge OK - i.e. the 4 flashing lights indicated the bank was fully charged. On connecting it to devices the bank indicated no charge left after 5 mins and the device was not charged. Now its just flashing all lights constantly which I think is a fault indication - returned it and very disappointed as this item was what i was looking for in size and weight

I have a few other power banks but none even come close to this one in terms of sheer size and convenience - very sleek, slightly larger than a credit card and about as thick as 4 cards stuck together. Comes with a built-in cable (micro-USB) for charging devices. Has a single LED to indicate self charging status. Charges fast with no warming and provides enough power to charge my phone once.

I wanted a power bank that can charge my vaporiser in my pocket while on a night out. It does exactly that, effectively doubling my vaporiser charge. It fits easily in my wallet and is thin enough to forget it's there.

I like the size of it and the weight of it but the pin attached does not fit my Samsung galaxy a20eIt comes with 3 apple extra pins shame it did not have one for other phones it connects to later models of SamsungAll in all it’s a very good little lightweight charger And value for money I have given a five star review because I feel it deserves it although won’t be really happy to have a little pin that would fit my Samsung galaxy a20e

Ok so straight out the box looks solid and well built, I then charged to full capacity, solid red light (not flashing) as per instructions means fully charged. I was dubious about the claims of the capacity of such a small power bank. Unfortunately my reservations were well founded when I tested the item. plugged it into my phone and all it did was add 5%, get hot to the touch and then stopped charging. Totally dead and spent. If you have any sort of modern phone (smart phone) don't bother buying this go out and spend 10 pound more getting a proper powerbank. The prospect of having a credit card sized powerbank that fits neatly in your pocket and the selling point of this being so thin and small are a false economy as the capacity is obviously no where near what is claimed. Complete waste of money, unless you have a very small (non smart) phone which has a tiny battery already, then you might get a full charge out of this product, but even then I doubt it. I have given it 2 stars as in a real emergency (as in really desperate) it would probably just (and that's a real just about!) give you enough charge to make a phone call.

Size excellent. Will not fully charge iPad and very slow. Gets quite hot also. I wanted this to take on holiday to charge phone if needed. Will only provide a single charge. Decided to keep as so many other chargers are bulky and heavy