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Hi am after some advice on my 8S3P lipo battery. I built the battery to use on my custom electric bike using new lipo cells 3.7v 8000mah. The problem I am having is the battery is showing that each cell is charged to 4.2v but when I test voltage on + - output it reads 30v? and not 33.6v?. As 8 x...

Hi there I need some advice please. Ive made a battery for my electric bike and made it from used LG18650 2800mah li-ion cells. There are 60 of these cells in my battery pack and they are In parallel and series. The question I need to ask is do I need to fit a pcb protection board and do I need...