12V volt to 48 volt DC/DC battery charger for lead acid and lithium batteries (common negative) 1250 Watts Robust, marine, heavy duty from PowerStream.
Robust 12V to 48V charger, 12 Volt DC input battery chargers to use in 12 Volt systems, charge a 48V lead acid battery from a 12V source, heavy duty marine
Battery Charger 12V into 48V
MARS 12-48 30 HF multi-voltage battery charger e 12/24V, 36V, 48V 3-30A 1Ph 230 Vac | Polar electronics
Fullriver FR-1 Battery Charger - Adjustable Voltage 12V, 16V, 24V, 36V, 42V, 48V - Select Your DC