Aibocn Power Bank 6700mAh Lipstick-Sized Portable Charger, Fast Charging External Battery Pack for iPhone Samsung Galaxy and More

I am happy to have a decent priced extra power bank. The size is perfect. I am using it for a small emergency car kit. I have tested it out several times charging our S9+ phones. I think we could probably get almost two charges out of it. The speed is decent enough but probably not the fastest speed available. The design is sleek and compact, there are four indicator lights to show how much power is left. The charging cable supplied did not work out of the box but that won't cost a star because they are cheap and I have probably two dozen of them anyway. I would highly recommend this for anyone needing an extra power bank to keep in a purse, car, bug out bag, work, etc. It has enough capacity to get you by for a day or two and take up little space!

I love my “razor clam”.The shape fits nicer in my mini briefcase than a fully tubular charger and it holds a good amount of energy.

I thought this was identical to one I already had, but it's not as powerful. I use these to recharge Amazon fire tablets. This one, if plugged in when the tablet has about 20-25% left on the battery, will recharge it fully. But I found that if the charge is below 10% it probably won't fully recharge the battery. That's the only reason it gets four stars. My old one will fully recharge the battery even if it's complete dead.

Charges my iPhone well. Easy carry size, recharges easily.

Great power bank for travel

It's so hard to tell the differences between battery packs. I'm looking for the one with the best charge density for backpacking. This pack weighed 101g, which is in the lightweight 5000 class of pack. My USB tester showed 2900 mAh delivered. Given the draw from the tester, it probably output about 3200 mAh, which seems to be a typical loss from charging circuitry.The output was stable, it accepted a charge of about 1.6 to 1.8 Ah, which is almost full speed. Output was middle of the road and very close to full 2.0 A speed. A solid offering, if it were advertised as a 5000.

This portable charger lasts me on one charge for about 3 months! Small but powerful. Definitely worth every penny.

This power bank has NEVER worked for me. Unfortunately, I bought it for travel and just to keep in my bag, so I didn’t realize it was a dud until I could no longer return it. I seemingly was able to charge it up okay once (the first time), but even then it went dead quickly (without even being used) and has NEVER actually been able to provide backup power to my iPhone EVER. It just dies as soon as I plug a phone into it. Also after the first time I charged it, only one (of the four) charge indicator dots will light up regardless of how long I’ve charged it or how much charge it SHOULD have. I’ve tried charging it overnight and it still couldn’t hold a charge, so it’s not just slow! The one blue light blinks when plugged in to charger and is solid when not charging, but it goes off and dies entirely whenever I plug ANY device in to the bank to charge.Also, it’s A LOT bigger than a tube of lipstick. Very dissatisfied.