DIY Power Bank - Make Your Own External Battery Pack,2 Output 3 Input (Mirco,Type C,Lighting) - Battery Not Include (Black)

It's ideal for a DIY person like me.This is a convenient way for me to use my leftover 18650 cells from other projects.I made sure my 18650 cells were the same voltage and installed them into the case.I tested and verified the assembly before I attached the lid.I checked the basic functions, then completed the assembly.I am satisfied the pack works as expected.I like the convenience of assembly and the simplicity of use.This is an ideal way to make something useful from leftover 18650 cells.

Finally found a product that I can reuse my loose 18650 batteries. It's great that I can pick and choose the best batteries out of the bunch for my battery bank. It charges great, although not the fastest but fast enough. A little over 2 hours for my Samsung S21. Recharging the battery bank is a little slower, but that's to be expected since it's recharging 8 higher capacity batteries. It took a little over 3 hours to charge from 50% to 100%. The only negative is that once you put the cover on, it's basically on there permanently so you'll have a hard time replacing the batteries once they get old.

Great way to use up 16850 extra batteries, ease of use, extra little light, Price, and screen info.Only warning is to test your Power bank before installing cover as cover is not designed to be easily removed. I bought one, then another one to use up my expensive batteries. Wish USB C could send power out, but a USB adapter cable that goes from A to C or A to lighting works great. If I had more batteries, Would purchace again

Word of advice. Only add good cells that charges to 4.20 as once the case is closed that's it!Pity is that both USB-C ports can only be used to charge the powerbank (in). One should have been a charging port (out)

This thing is junk. I bought it to use as a bank charger for my 18650 batteries. The batteries won't even fit in it without distorting the case. The case gets so distorted that the cover won't fit with one battery installed. One position will not even fit a battery.

Bought a bunch of these through temu and they are out of stock there so bought this one here. The difference between this one and the ones at temu is that this one snaps together and so the cells you put into it, be sure they are healthy and wont need to be swapped out in near future, as the 6 that I bought through temu had screws to screw them shut and if needed unscrew to replace failed cells.

I have around 15 of these black and blue, love them

The media could not be loaded. I did not have a chip resistor so had to use a axial leaded resistor 220 ohms. Asked them how the flashlight function works and they told me to press the power button twice to turn it on or off but you have to hold the power on for three seconds to turn it on or off. Since the top cover is hard to remove according to other reviews and this charger on this unit is very slow to recharge the batteries I opted to cut the locking tabs so I can easily open and close the top cover and recharge the batteries with a good charger as needed. So it was originally designed to work so so, but not great. You get what you pay for. If you get one built correctly and it had all the parts installed and are not missing you may get a working unit for a lower cost. So I only rated this power bank two stars for me getting a unit with a missing resistor but it did work fine after I fixed it.