This single 36V 40Ah battery will provide all-day power and performance. Engineered with Lithium Iron Phosphate (LiFePO4) technology this single battery has equivalent power, one-quarter the weight, and lasts 5 times longer than a set of lead-acid batteries - providing exceptional lifetime value. 40Ah of capacity is suitable for 36V trolling motors or simply connect two batteries in parallel and get 80Ah of 36V performance and never worry about running out of power, that's almost double the available power at a third of weight compared to a set of lead-acid batteries. Also suitable for golf carts and small electric vehicle motors or any 36V deep cycle application in marine or rugged environments where you need lots of power for an extended period. Fitted with Bluetooth for monitoring via the EvoCharge Lithium App.