Powerbank 4x18650

I had Baseus 20,000mAh power bank with swollen batteries, but a fully functional PPBD20 board, so decided to reuse it with 4 18650 batteries. 

You'll also need 4 M3x12 screws

I took the dimensions from the board manually, so there may be some errors. I will also add board model in case u want to make something custom on with it.