The Battery Tender 12V, 800mA battery charger and maintainer has all the features of our best selling Battery Tender Junior, in a mountable, rugged, water-resistant package. This 800 milliamp battery charger is shock and vibration resistant - perfect for all types of vehicles that may be exposed to the elements. This charger has additional functionality to switch between traditional lead-acid, flooded or sealed maintenance-free batteries and lithium batteries. Stay Charged: This 800ma charger provides a full charge to your watercraft or vehicle battery before automatically going into float mode to maintain proper voltage levels without overcharging. Fully Selectable: Engineered to easily switch between traditional agm / Lead Acid batteries and newer Lithium batteries for ultimate charging flexibility. 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: 800ma battery charger, ring terminal and alligator clip combo cable, 3 year warranty, and lifetime customer service Extended Battery Life: Compatible with lithium, lead-acid, flooded, and sealed maintenance free batteries (AGM and gel cell) ideal for use in long term storage to provide and maintain an optimal charge. It is ETL US/CSA, FCC, ICES, BC, IP67 certified.