EnergyCell Portable Charger, The Lightest 5000mAh Power Bank with 2.4A Output, Compatible with iPhone Samsung and More-Black

Pretty good

I tested this device out with a meter to test the capacity, and really didn't expect much. The bottom of the battery bank says 18.5 WH, and 5000 mAH. Tested it from fully drained to full, and it shows that it put back in 16.97 WH. Pretty dang close. Tested it charging an iphone 7, a Samsung S21, and an older cell phone. Max output I saw was about 1.6 A.- or about 7.5 W. Device is very light and works. I don't expect it to charge the S21 from scratch to full; it's not big enough, but this device can add a charge to get you buy for a short bit. It's small enough to fit in a pocket without any serious issue; it's also very light.For the price, if you want a small pocketable backup battery bank, to carry in your pocket, well, it'll fit the bill. Bought a couple to give away as gifts to some people I know with older phones- for them to carry around when their phone dies.The charging rate- well, I saw up to 1.6 A sustained: not bad considering its size. A poor cable I used initially made me have second thoughts; changed the cables, and it seems to work well. For $12, it's hard to beat. If you want something to charge a modern phone- I would suggest something bigger, but if you just want something to get you by in a crunch, perhaps this fits the bill.note: This is NOT a fast charging device. but it also only cost $12.

These keep my Knuckles charged and functional. I have never had a problem it these.

I ordered this in pink, but received a black one. Not a big issue, but I ordered a color as it would be easier to find in a deep purse. Charger is a decent size. Not too big or bulky. I get one full charge out of the charger when it is fully charged. It does take quite a bit of time to recharge fully. Several hours at least. I would prefer it to have a longer charge and not take as long to charge, but it is decent for the price. I'm not sure I would order it again, but it is fine for now.

When I first received this charger my first thought was that it was very aesthetically pleasing, I then used it to charge my phone while I was outdoors and found it to fit in my pocket easily. The only problem was when it came to charging it was slow and did not charge much. My phone only went up 15% and the charger was already half gone. Overall I was disappointed after seeing that and although I liked the design of the charger I can not recommend anyone to use it if they plan on being outdoors for a long time.

Charger is lite weight and does go right into my pocketbook, also I like how it fits right into my pocket. This charger hold power for about an hour. Should do the trick for my up coming trip to the Mouse House.

I wanted a smaller portable charger for my phone that I could easily fit into a small purse, and this is perfect! It's actually a bit larger than I anticipated - the one I used to have was smaller, but the newer phones also have better batteries that need more charging capacity. It has kept it's charge even when not used for a while. Overall, I really like this charger and would definitely recommend.

I got 2 of these for my trip to Disney world with my wife and they were perfect for keeping our phones charged while in the parks all day. Now that we have them I would imagine they would work well for a camping trip or something