The Battery Tender 3 AMP battery charger will fully recharge and then maintain a battery at its proper storage voltage without the damaging effects caused by trickle chargers. At double the output (3 AMPs) than the original Battery Tender Plus for a quicker recharge on automotive, marine, and powersport batteries. An ideal charger for everyday charging use or long-term storage and maintenance, it is compatible with 6 volt and 12 volt AGM, flooded, and gel batteries. Stay Charged: The powerful 3 amp charger provides a full charge to your automotive vehicle’s battery before automatically going into float mode to maintain proper voltage levels without overcharging. 5 amps 12 volt charger and maintainer Connect and Forget: With a low maintenance design, our universal vehicle charger and maintainer is compact, lightweight, and easy to operate even in small storage space for your convenience Includes: 3 amp battery charger, ring terminal and alligator clip combo cable, 5 year warranty, and lifetime customer service Monitor Power Levels: A solid state two-color LED light indicates the charging status and if the battery voltage drops too far under load, ISM adaptive charging will resume full charger output power. It is UL/CSA, CE and BC approved Safe and Secure: Spark-proof during lead connection and automatically detects reverse polarity to ensure a correct, locked-in connection before providing power.