CWK 7800mAh 9 Cell Capacity Battery for Acer Aspire AS5253-BZ472 AS5253-BZ481 7741Z-4643 AS10D31s 5755-6482 5755-6685 5755-6699 5750-6661 5750-6667 5750-6677 4551G 4771 5551 4771G 5741 4 Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 11.1 Volt (10.8 Volt compatible) Capacity: 7800mAh (Better than 6600mAh) 90 Day Money Back. Buy with confidence!