LHIABNN DIY Power Bank Box Flat Head Battery Charger Outer Case,2 USB Output Ports Plastic Shell Box with LCD Display,Micro/Phone/Type-c Input Port Power Bank Case (Black)

I grabbed this and a generic laptop battery for an asus laptop (just because all 8 cells were in a straight line which makes it easier to rip apart for the cells.) And I stuffed them in this SLIM box, probably 2-4 mm thinner than my old 8*18650 box, whose ports are wearing out now after 5 years of reliable work! So i saw this looked as if it was from a similar company. Rolled the dice and it works great.The usb C is an input only but works well with 5v 2A cell phone chargers, just watch out it isn't Qc or QI so no quick charging it or you will zap it with 12v which is bad lol... anyway good solid micro usb which i thought would be handy i haven't tried the lightening input yet but if its like the other 2 its good to go. I did a test with two 5v testers and i got 4.3 amps out of the two outputs and it did warm up but it didn't over heat or drain faster than expected. So it maintains a good conversion even while running two 2amp outputs. while my old one only did 3 amps and would overheat after about 20 mins, so i rarely ran it over 2 amps so this is a massive upgrade for me.Id say the biggest downside is it doesn't reopen without a lot of shims and time. It has small D shaped clips that are about ever 2 cm's down the seem. So yeah, pick a new battery and don't expect to trouble shoot it after its together, but the descript explained that.TLDR:Great, works at 4 amps consistently. Can charge two newer phones but not Qc or QI not even to charge it. But It does a great job and will probably be a life saver in air ports post pandemic!

Of the three power packs I have this is my favorite. I use while I'm doing bike deliveries so it needs to be either cheap or sturdy. So far this has been both. When using all slots I get a lot of life. Footprint is minimal and clear. Appreciate the batteries in parallel so I can steal them for other tools that use the wonderful 18650 cells.The build quality is poor. When first purchased there was some plastic that needed to be removed. Even then the case did not fully close on all sides. Plastic is very brittle. Even on the first close a few of the clasps snapped off when trying to close. Different plastic or latch design would greatly add value.In my opinion this is aesthetic issue and I'd rather be able to open and close (clearly goes against the design). I used rubber bands to keep it closed. Ended up being a handy way to keep the charging cable nearby. Anticipate rubber bands will prevent future cracks as well. Had I spend more than $20 on this I would be disappointed.

Second purchase.After my solar battery banks battery swelled up and nearly split the case, I decided to replace the battery. But it was some oddball proprietary Li battery and there does not seem to be a replacement available, and it was not designed to be replaced. 3 years and now its worthless. Spent 35 bucks so I could add to the landfill.So I decided to do it the right way and bought this battery bank housing.Works great. I know the batteries in it are good quality Samsung 2600, and thats a big plus.At 8x2600, in theory, I have 20,800 ma of power at my disposal. And the display is bright white and easy to see.The unit did get warm when charging but did NOT get hot. Thats a good sign.A couple things to note. After installing your 18650 battery's it is important that you run the bank down to zero before charging. Charging in a bank configuration will "balance" the batteries as a "bank". That will insure that no one battery is being overworked and reduce the chance of failure. After that, charge as normal.The bank is not designed to be a charger. It is a "bank". Get a smart charger if you need batteries for other devices. Try to match your batteries as far as value. IE 2000, 2500, 2600 etc. Best advice is to purchase new batteries of the same brand and value.The case is not easy to open so do your discharge, charge and testing prior to closing the case. The case does not have saddles in the body to hold the batteries secure so I used a hot glue gun to hold them in place. Tape or contact cement would probably work just as well. Same way laptop batteries are secured.So far, very pleased. I will update in the event of a failure or problem.

I really like the compact design including a very solid feel. It was nice to be able to use more than one type of cable to charge it. Given the number of batteries it holds, it seemed to charge quickly enough. Output was good and appeared to match the readout when tested with an external USB tester. It was nice to have two different levels of output 2A and 1A. I didn't need super high output because I charge most of my devices slowly. Charging my Samsung A32 from 22% to 100% took left the readout on the charger at 51% so I figured two full charges from one full charge on the power bank. Unfortunately, when the readout hit 30%, it stopped charging. This is why I've chosen to return it. I have a 4 cell power bank which works just fine, just half the capacity. For now I'll stick with my smaller one though I really did like the construction of this one. I do wish it was easier to get the batteries out, however.