AP13J4K New Laptop Battery for Acer Chromebook C720 C720P C740 KT00304001 (3ICP5/65/88) [ Li-Polyme, 11.25V/45Wh] -18 Months Warranty Battery type: Li-Polymer; Capacity: 45Wh/3920mAh; Voltage: 11.25V Fit For: AP13J4K AP13J3K KT00304001 Replace for : Acer Chromebook C720, C720P, C740 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. Warranty: 18 Months Warranty,30 days money return guarantee !