The ProMariner ProSportHD Series Waterproof Battery Charger delivers high-performance marine battery charging in a compact, waterproof form factor. This advanced line of waterproof battery chargers works perfectly for any combination of group 2431 batteries. Each charger bank cable connects to a dedicated 12V battery, even if configured for a 12V, 24V, or 36V trolling motor or system application. The ProMariner ProSportHD Series Waterproof Battery Charger brings fast, reliable charging to your flooded, gel, or AGM boat battery. Waterproof Great for any combination of group 2431 batteries Fast, reliable charging Each bank connects to dedicated 12V battery, even if configured for a 12V, 24V, or 36V trolling motor or system application