Monster Marine Lithium 12v to 36v Quantum Charge "On The Run”The Quantum Charger is an "On The Go" advanced marine grade and designed charger that will charge your single 36v battery bank from the charge current coming off of your boat engines alternator it will also charge your 36v battery when you plug in you 12v charger to charge your cranking battery at night at your house. It conncets to your 12v cranking battery and once your boat engines alternator charges up your cranking to a certain voltage the