Buggies Gone Wild Golf Cart Forum - View Single Post

agpfl · 01-17-2019, 11:44 AM

I read your install. Your configuration was even more advanced than what I normally do because you are cutting off the AC side of the charger. You have used relays for interlock and bypass.

I have the BMS cut off power on the DC side of the charger if any cell hits 4.2v, or the pack reaches 58.8. I purchase a new Li-on charger for less than $200 that is programmed to turn off about .5v shy of max voltage. So for a 14cell Leaf pack I have the charger cut off at 58.3. This gives me two different forms of protection from overcharging. My charger is the one that normally stops the charging, but the BMS can shut down charging as well if the charger does not do its job.

01-17-2019, 11:44 AM	#3
agpfl Wild Gone Join Date: Oct 2016 Location: Davie, FL Posts: 633	Re: Basic Programmable BMS I read your install. Your configuration was even more advanced than what I normally do because you are cutting off the AC side of the charger. You have used relays for interlock and bypass. I have the BMS cut off power on the DC side of the charger if any cell hits 4.2v, or the pack reaches 58.8. I purchase a new Li-on charger for less than $200 that is programmed to turn off about .5v shy of max voltage. So for a 14cell Leaf pack I have the charger cut off at 58.3. This gives me two different forms of protection from overcharging. My charger is the one that normally stops the charging, but the BMS can shut down charging as well if the charger does not do its job.