LIJIANI 18650 Power Bank Case Portable DIY Battery Pack | LCD display of capacity, reverse installation detection, overcharge protection.

I like this charger for the size and power output. It has enough charging ports (usb-c and A). Since it is a lot flatter than most, it fits in a laptop bag or in my wife purse very easily. Will be ordering a few more. Also takes any size 18650 batteries. Flat top or button top.

Really works great. My laptop went bad. But the battery pack was good and never had charging issue. I took the batteries out. It takes some careful tinkering and cutting. But I’m now able to use it in this device and power up a lot of things. I am very happy with the performance of this device.

I really like this unit for my prep plan. My flashlights (2) use 18650s and are rechargeable. I have a head lamp 18650s too. Everything is rechargeable so if my lights are charged I can swap batteries into this. If flashlights need power I pulled them from this. Also, it lets me have back up power to charge devices. Why 4 not 5 stars? I’d really a ruggedized case or even a rubber sleeve or something that would make me feel more confident that one drop I wouldn’t be SOL in a bad situation but great for the price and tons of power.

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.

Great idea. Multipurpose. Battery charger and a portable battery. Yes, they charge a little slower than some, but you have to give a little. Can't ask for everything. Some people are just spoiled brats if you ask me. It will even pick out the bad batteries. Would definitely recommend.

It's decent value and good for charging, but even on 4 full 18650 batteries I can only get 0.7 amps out of it. That would probably be fine if you only want to slow charge your electronics, but if you intend to use this for your phone look elsewhere. I wish I would have read the reviews about the poor power output before I bought.

Unit fried after 4 months. Never really performed that well. I have other units that are better quality.

Great way to put your loose 18650’s to work. It appears to balance the cells. Shows individual cell conditions on display. I recommend.