Laptop Battery Avacom for Dell Inspiron 15 7559 7557 Li-Ion 11.1V 6660mAh 74Wh:Has your laptop battery been losing charge? The battery Avacom for Dell Inspiron 15 7559 7557 Li-Ion 11.1V 6660mAh 74Wh is a backup power supply for selected Dell laptops. A flat laptop battery or a power cut will not disconcern you anymore. A spare laptop battery is suitable as a second battery when you are on holiday and you cant connect your device to an electrical outlet, but still need to use your laptop. The battery consists of 3 piece(s) quality cells and offers a capacity of 6660mAh. Avacom for Dell Inspiron 15 7559 7557 Li-Ion 11.1V 6660mAh 74Wh Battery Key Features Alternative Lithium-ion (Li-ion) battery Safe alternative to the original battery Capacity: 6660mAh, voltage: 11,1V Supplies your laptop with power when you are on the go Ensures an improved battery life and increases your productivity Tip: Frequent use affects the performance of the battery. Please adhere to the instructions on correct discharging and charging that can be found in the manual to prevent capacity loss.