7 volts => 100% transfer to 48v bank Put a dump controller on the 12 volt bank: Start dump at 13. They convert it to rotational motion to turn an alternator that produces electrical power. Still need to read up on how to isolate batteries and what is energized when 12v batt. Whether this device is rated 100% efficiency, or 90% efficiency or as low as 80% efficiency, 80% of 4 Batteries is still much better than 100% single Battery.
cvity Switch Fitter R wørse Polaro Prot Automotive qualified 48V/12V DC/DC converter - 1. Convert 12v alternator to 48v Alternator Temp Sensor.
