Revive Your Lenovo Laptop with 4400mAh 6-Cell Replacement Battery Is your Lenovo IdeaPad or G/B/V/Z Series laptop struggling with short battery life, slow charging, or sudden shutdowns? This 100% new 6-cell Li-ion battery is engineered to restore reliable performance. With a 4400mAh capacity and 11.1V output, it delivers long-lasting powerperfect for work, study, or travel.