Sterling9250
New Member
I have a 4 kw solar system running a SAJ solar inverter with two, 100 ah 48 v lifepo4 batteries. Sparing you all my complaints about SAJ inverters (they are terrible), the inverter low voltage shut off doesn’t work. I have it set to 42volts currently. When i gets close to 42 volts the inverter shuts off (mostly), and the inverter knows it shuts off, but there’s a constant drain of 0.3 to 0.5 amps after the low voltage shutoff. The drain continues until my batteries are so low that my battery BMS kills the connection. SAJ support is horrific.
Is there a manual solution I can put in place, such as installing my own low-voltage disconnect module? I found one from Victron called the BatteryProtect but it says not to install it between the battery and the inverter, which is exactly where I would want one to go.
Is there a manual solution I can put in place, such as installing my own low-voltage disconnect module? I found one from Victron called the BatteryProtect but it says not to install it between the battery and the inverter, which is exactly where I would want one to go.