6V 12V AMP Waterproof Automatic Battery Charger Maintainer for Car Motorcycle Boat RV Truck 6V or 12V charging; 3.8A fast charge current 12V ; High performance computer controlled charging system for boats, cars, motorcycles, UTV, ATV and more! Will keep your battery fully charged when not in use; Works with lead-acid batteries, flooded or sealed maintenance free batteries (AGM and gel cell) Low weight design for easy handling; Compact for tight spaces Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode) Pack of 1 ; Waterproof & Rain-proof Design (IP65); Automatic short circuit and polarity reversal protection