Battery Type: Li-Polymer,Voltage:11.1V Capacity:4000mAh/44Wh. Up to 500 recharge cycles over the life of the battery, meet OEM standard Compatibility: OD06XL BL06XL HSTNN-IB4F HSTNN-W91C 698943-001 698750-171 H6L25AA H6L25UT.