EZOPower Olympus BLN-1/ BLN1 Full-Decoded Rechargeable Lithium Ion Battery for Olympus PEN E-P5, OM-D E-M1 EM1 EM-5 E-M5 Digital Camera Battery Voltage: 7.4V; Capacity: 1020mAh; Type: Full-decoded Lithium Ion. Integrated microchip prevents overcharging & lengthens battery life. This is Capable of showing battery status including battery level and remaining usage time on your camera. There is no memory effect, so you can recharge partially drained batteries without reducing performance. Please do not use OEM charger to charge this battery, it' better to charge with EZOPower charger - B00AZRMC1I.