Fryguy1111
New Member
Hello. I've been digging thru the forum as well as Will's videos, but haven't found a clear description on how to properly size a BMS. I plan on replacing my existing Trojan T-105 lead acid (total 450AH) battery bank with a similar sized DIY lithium battery system. I'm looking to build out a 560AH lithium battery bank (2 - 4 x 280AH cells) battery bank. I currently have a 1500 watt inverter/charger and 500 watts of solar. I know my wife plans on using her kitchen appliances, but I'm not sure what load those pull off-hand.
I'm guessing I need an 8-wire BMS or 2 x 4-wire BMS (or a 4-wire BMS for a 4p2s battery system). I don't need a low temp cut off feature in the BMS as my boat is in Mexico and the average temp in winter is about 55° to 60°.
Is the BMS sizing based on the expected amps drawn thru the inverter?
Thank you.
I'm guessing I need an 8-wire BMS or 2 x 4-wire BMS (or a 4-wire BMS for a 4p2s battery system). I don't need a low temp cut off feature in the BMS as my boat is in Mexico and the average temp in winter is about 55° to 60°.
Is the BMS sizing based on the expected amps drawn thru the inverter?
Thank you.