Powermania Turbo M220V2 waterproof battery charger (Dual Bank, 20A) Waterproof | Automatic 3-Stage Smart Charge (Fan-cooled) 3 user-selectable charge profiles (Lead-acid/AGM, GEL, AGM+) Dual Bank | 20 Amp (12/24V DC) | Individual Bank Status Indicator 8.25" x 5.75" x 2.75" 120/240V AC Input Adaptive Loading (more amp to weaker bank) Charge fully-depleted (0-volt) batteries 100% output at 90V AC