Powermania Turbo M Series Waterproof Battery Charger Waterproof | Automatic 3-Stage Smart Charge (Fan-cooled) 3 user-selectable charge profiles (Lead-acid/AGM, GEL, AGM+) Dual Bank | 30 Amp (12/24V DC) 10.75" x 7" x 3.25" 120/240V AC Input Adaptive Loading (more amp to weaker bank) Charge fully-depleted (0-volt) batteries 100% output at 90V AC