Go to Amazon Sites : br br Battpit? Laptop Notebook Battery Replacement for Acer Aspire 7740-6656 (4400mAh 48Wh) br br Type 111 Volt Li-ion Laptop Battery br Capacity 4400mAh 48Wh Condition New br 30-Day Money Back Guarantee 1 Year Warranty br This is a genuine Battpit product comes with 1 year warranty Beware of imitation Battpit bears no responsibility on the imitation product purchased br This battery only compatible with 108V and 111V versionNot compatible with Aspire 8930 Series models