DC Voltage Boost Converter - 240W Automatic Boost Converter DC 24V to 48V 5A Waterproof Module for Golf Cart Club Car

The input says 40-60v input, can I hook 36volts to it also???

Has anyone experienced the boost/step up causing phantom drain on the battery in a car?

Will this work to protect a 12v to 12v battery charger if mounted between a 12vdc (20.48v actual out put) generator and the charger? All on a 8a fuse.

Can i send 12v ac as an input or does the input need to be dc?