We are looking to use the BMV-700 to control our generator at our telecommunications sites. Our sites are -48. Positive is return. Not sure if this can work but wanted to confirm with you guys. We are running sites off grid and need to turn on genset with a SOC control. Using Large 100Ah Lithium Cadenza battery unit. Cannot use Voltage control with the lithium so looking for a good SOC control. We use SMA units for other systems with genset and SOC built into the Inverter. Looking for a stand alone small genset controller that uses SOC. Thanks