36v 10ah Lithium Ion Electric Ebike Battery Top of the line - composed of samsung cells Includes aluminum mounting case, smart charger, and locking key for security This battery has an integrated battery management system designed for delivering power for 1000 watt ebikes and those with lower wattage requirements Measures: 15 1/2 x 3 1/8 x 4 3/8inches 394x79x111mm Wire two in parallel and you can draw 2000 watts