Nokia C6-01 C3-01 C5 5MP 6303 Classic Original BL-5CT Li-Ion Cell Phone Battery (1050 mAh) High Capacity reliable OEM Lithium-Ion Battery rated at 1050 mAh Expect to Approx. Double Your Talk and Standby Times OEM battery for you to keep as a reliable extra power source handy Advanced lithium-ion technology keeps phone working at optimum performance.