Portable-Charger-Power-Bank - 2 Pack 15000mAh Dual USB Power Bank Output 5V3.1A Fast Charging Portable Charger Compatible with Smartphones and All USB Devices (Deep Black and White)

These battery packs are awesome! I've bought them numerous times and I take them everywhere. They've been to 9 different countries on various vacations and they are a must if you're going to be taking hundreds of photographs. Each battery can charge my Samsung 21 from 0% to 100% like 3 times or charge two phones at once. I've given two of them as tips to guides in Peru and Egypt and they were very well received and made an awesome not-expensive tip that will come in very handy.

We use them for our heated vests. The fit our pocket and do well for the day. We purchased back ups for those day we forget to recharge them. Can also use them to charge our phones.

Great deal for the $$ ! Sister in law purchased my first set and they are still going about 1 1/2 yrs. now. I purchased a 2nd set months later, but one of the swelled and was trashed. I have to say though, my sister and niece ordered the same sets liking mine for the $ and they have worked great. So, 3 out of my 4 are still going strong and yes, I will order them again.

After a year, they do not hold power like they used to.

I always have one of these in my bag and they last 2-3 full charges for my phone and works with any usb charger. They are very durable as well i’ve dropped it countless times and it still works flawlessly

Great purchases for the price the work great.

These got very warm when using, and batter drained in about 1 hr when powering a heated camp chair on low. Just didn't trust them enough to keep them. Ended up returning.

I use this to power an antenna in my attic via USB. Has to be recharged every couple of weeks - Not bad.