Here are my parts for a 10S5P that will not charge past 39.5 volts.
Batteries: Samsung 30Q (50x) Bestech BMS: https://buildkitboards.com/collections/batteries/products/bestech-bms?variant=7201537687582 Charge plug: https://www.amazon.com/gp/product/B072BXB2Y8/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1 Battery Meter: https://www.amazon.com/gp/product/B01LQ7MT4K/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1 Anti-Spark: https://www.amazon.com/gp/product/B07CMYPZ6Z/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1 VESC’s : FocBox.
So I recently made a 10s5p Pack, and now it will not charge past 39.5 volts. I have checked the voltage at every single one of the 50 cells, and every cell reads 3.95 volts exactly.
I’ve done some reading, and found that the reason the charger might quit, is because one cell group might read 4.2 volts across, so the charger will shut off. However, none of my groups are at 4.2 volts, They are all at 3.95.
I am at a loss for what could be preventing the pack from reaching a higher voltage…