battery bms reading wrong voltage?

[dan1982]

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 4.2 is 33.6. Can somebody help me please.

 

[dan1982]

Hi have fixed it now all good forgot it it a 7S battery and not 8S so the readings are ok