This advanced marine waterproof battery charger is slim and lightweight. It can be mounted anywhere and is designed to charge 36V Monster Marine Lithium batteries! Specifications: Size: 6" L x 4.75" W x 2" H Weight: 4lbs Output: 43.4-44v DC @ 5 amps Input: 100-120 VAC Charging Lead Wire Length: 5ft long Housing Type: Coated Aluminum Maintenance mode for 36v LiFePO4 batteries.