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
AC Converter / Battery Charger 36V & 48V Smart Charger 25 Amps - AIMS Power
12V to 48V 1500W Battery to Battery Charger w/ reverse charging featur – Sterling Power Products
Amazon.com: Beleeb Multi Voltage Battery Charger 12V 24V 36V 48V 60V 72V for Lead-Acid and Lithium-ion Battery,Trickle and Desulfator, 19lb, Black : Automotive
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.
Dual-Input Voltage Battery Charger | Eaton
VEVOR Golf Cart Battery Charger 48V Club Car Charger 15A Golf Cart Electric Charger with RXV