This 6 - Cell 4400mAh Li - Ion Laptop Battery is designed for various Acer Aspire and TravelMate series notebooks, providing reliable power and extended usage. With a capacity of 4400 mAh and a voltage of 11.1 V DC, this rechargeable battery ensures a steady and uninterrupted supply to your device. It features a proprietary battery size for optimal fit and performance, making it an ideal choice for users seeking dependable and environmentally friendly power solutions.