Warranty 1 Year Voltage 11.1V Battery Type External Cells 6 Cell Cell Type Li-ion 18650 cell Battery Capacity 4000mAh Watt-Hour 44Wh Compatible with Casper: TW8 Series Fujitsu-Siemens?SW8 TW8 Sereis Gericom: G.note MR0378 Series Gigabyte: W476 W576 Q1458 Q1580 Series HASEE: HP550 HP560 HP650 HP640 HP660 HP430 LG: R405,R410,R480,R490,R500,R510,R560,R570,R580,R590 Series Philips: Freevents 15NB8611/05 15NB8611 Qaunta: TW8 SW8 DW8 EAA-89 series