The Battery Tender® 3 AMP battery charger will fully recharge & then maintain a battery at its proper storage voltage without the damaging effects caused by trickle chargers. A higher output (3 amps) than the original Battery Tender® Plus for a quicker recharge on Automotive, Marine, & Power Sport batteries combined with the automatic switch to maintenance mode makes this unit very versatile. It is an ideal charger for everyday charging use or long-term storage & maintenance. Ideal for AGM, Flooded, & Gel batteries. Features Input: 240 VAC / 60 Hz Comes with EU-plug Output: 6 V or 12 V / 3 amps Reverse polarity protection to ensure user safety. Spark-proof Short circuit protected Complete 4-step charging program (Initialization, Bulk Charge, Absorption Mode, Float Mode) Perfect for all lead-acid, flooded or sealed maintenance free batteries (AGM & gel cell) Safety timer: 33 hours