Rechargeable Battery battery cell, lead (Pb) cell, voltage up to 12 V, 7200 mAh, 2 piece(s) per pack Have you been experiencing battery capacity loss? A flat laptop battery or a blackout won't upset you anymore. A backup laptop battery is suitable as a second battery for your travels when it is not possible to connect your device to an electrical outlet, but still want your laptop to stay switched on. Avacom Battery Kit for RBC22 Renovation (2 Pcs Batteries) Battery Key Features Alternative Lead (Pb) battery Safe substitute for the original battery Capacity: 7200mAh, voltage: 12V Supplies your laptop with power when you're travelling Ensures a longer battery life and allows you to get more work done Tip: Frequent use causes a reduced battery life. Follow the instructions on correct handling and charging that can be found in the manual to slow down capacity loss.