The Victron Energy Buck-Boost DC-DC Converter 50A solves battery-to-battery charging in vehicles with smart alternators, delivering a stable 12V or 24V charge to your service battery from the starter system. It's the pick for van, RV, and boat owners with Euro 5/6 engines or lithium setups — $94.25 today, down from $292.50 (68% off). Buy online at PowerHaven Outpost and use coupon OUTPOST12 for an extra 12% off.
Specifications
- Brand: Victron Energy
- Product Type: Buck-Boost DC-DC battery-to-battery converter/charger
- Rating: 50A
- Systems: 12V, 24V, and 12/24V combinations
- Programming: Fully programmable via free PC application
- Protection: Engine-running detection prevents starter battery deep discharge
Fusing & Cabling
For a 50A unit, use appropriately sized cable (typically 4 AWG / 25mm² or larger depending on run length) and fuse both ends near the battery — commonly a 60-80A fuse per the manufacturer's installation guidance and local code.
24V Charging from a 12V Alternator
Yes — the buck-boost design lets the 50A converter charge a 24V auxiliary or lithium battery from a 12V alternator and starter battery, boosting voltage while limiting alternator load.
Programming
Connect the converter to a PC with the Victron software to set charge voltages, battery chemistry profiles (including lithium), and system configuration.
50A vs 25A Comparison
Choose the 50A for larger auxiliary banks and faster charging; the 25A suits smaller setups with lower alternator capacity.
Price & Deal Value
$94.25 vs $292.50 — save $198.25, plus coupon OUTPOST12 and free shipping over $45.
