Kodak 2600 mAh Portable Charger Power Bank - Black

A good product - charges an iPhone about once from say 25% back up to 100% - generally charges quickly also.

Ideal size for the job.

Bought one from a shop. Only has one charge but works fine with my iPhone. Small and great for emergency charging. Can’t complain for the cost.

I think the problem with the other reviews is that the output of this is only 1A. Most phones require an output of 1.2A or higher, hence why they are not charging. All I can say is check the input requirement of the device you wish to use this for. I've had no issues charging a HTC Desire Eye (as it takes 5v - 1a input). Sturdy build and from a good, well known brand.

Charges my note 3 and Bluetooth headset. Works fine.

Paid £3.99 for mine from a B&M store. Charged it twice and twice tried to charge a Moto G phone. Both times it charged to 60% (from a start of about 25%) before packing in. Enough to get you out of an emergency but not enough to give a decent charge for prolonged phone use.£3.99 is not much of an investment, but I'd be most upset if I'd paid a tenner for this.

I bought this also from ASDA, as I was in desperate need of a boost to my phone when out and about 100's of miles from home, and had the same issues described here. The power bank seems to alternate from charging to off every few seconds, meaning that the phone never charges but seems to hover around the same percentage from when you first plugged in the power bank, however, switch your phone off and its a different story, phone went from 15% to 60% in about an hour, not ideal but it does work... kind of!

It just doesn't work. Packaging says it comes charged and ready to use - didn't charge my phone. Plugged the power bank in to charge it over night - still not a flicker of charging when plugged into my phone. Returning it tomorrow. Totally useless, do not buy this. Bought this from Asda - on sale for £8. Came up as £6 at the checkout, but it's still not worth anything at all.