I've had a couple of 200ah 12v DIY banks for a while now which have always been inside a compressed plastic case without issue. Today i pulled them out, disassembled / reassemble on the workbench and then wrapped with Kapton tape for the very 1st time. Everything checked on on voltmeter, BMS etc. Then when i picked up the the taped / assembled cells form the bottom i got a tingle from the aluminum. Voltmeter showed 9.97v. Then as i disassembled the cells 1 by 1 the bare aluminum voltage on the bottom of the cells reduced. I then tested the second pack with plastic in between the cells and it was reading 10v from cell 1-4 and reduces by 3.3v when measure between cells 1-3 and then 1-2.
Like i said the batteries before today have always been in a case before and never handled like this so i just wanted to check if the volt meter should see voltage on the bare aluminum bottom while assembled.
Thanks for your help.
Like i said the batteries before today have always been in a case before and never handled like this so i just wanted to check if the volt meter should see voltage on the bare aluminum bottom while assembled.
Thanks for your help.