Kastar 2 Pack PS-BLS1 BLS-1 Battery for Olympus Evolt E-620 E-600 E-450 E-420 E-410 E-400 PEN E-PL1 E-P1 E-P2 E-P3 E-PL3 E-PM1 Digital Camera Kastar Replacement Battery for Olympus BLS-1 PS-BLS1 Battery Battery Type: Lithium-Ion; Battery Voltage: 7.4V Battery Capacity: 2100mAh Package Includes: 2 Batteries Compatible: Olympus E-400 Olympus E-410 Olympus E-420 Olympus E-450 Olympus E-600 Olympus E-620 Olympus E-P1 Olympus E-P2 Olympus E-P3 Olympus E-PL1 Olympus E-PL1s Olympus E-PL3 Olympus E-PM1 Cameras