Battery Charger Case,Portable DIY Power Bank Box with LCD Display 2 USB Output,Micro and Type c Input, Smart Charger for 3.7v Li-ion Rechargeable Battery (Battery Not Included)

If you have loose 18650 batteries, this item puts them to good use.

Funciona bien es un poco lento para cargar y recargar, de resto ha funcionado bien.

Has light,can charge 18650 battery's & use to power phone

I have been using this for a few weeks now and find it very useful especially when charging 18650 cells, which is the primary reason i bought it. Although I have been in a pinch a couple of times now and it works as effortlessly as a portable battery bank for recharging my phone and other usb powered devices. My only dislike of it is that i am not 100% sure if it balance charges or not and after seeing some horror stories about imbalanced cells i have not been adventurous enough to put cells with different states of charge in it. But for what it is it works better than i would expect for the price.

I love the innovation of this product. Combining an 18650 charger with a power bank is a great idea. Awesome product for someone like me who saves all the individual cells from their old lithium battery packs. It feels a little cheaply made but for the price and the features you can't complain.

Bought this so that I can have a battery bank to power a mixer for a mobile audio mixing setup. DOESNT EVEN LAST A MINUTE. It just automatically turns itself off after 30 seconds. I have to have my phone plugged into it for it to not shut off. And after my phone hits 100%, it turns itself off.TERRIBLE AT DOING ITS JOB

Works well. I am using batteries from old computer batteries.

I like how you can use as a charger for 18650 batteries or as a battery bank