Click on the link to go to the product page. Brand: XTend computer battery Voltage: 11.1 Volts – also compatible with 10.8 Volt systems Battery Capacity: 4200 mAh Battery Type: 6 Cell Li-ion Cell Origin: Samsung (South Korea) Color: Aluminum Warranty: 1 Year Warranty Guarantee: 30 day full satisfaction guarantee Useful Life: 300-500 recharge cycles Fits the battery part numbers: A1278 A1280 MB466LL-A MB771LLA MB771 6614817

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