Premium 2x PS-BLS-5 BLS5 Battery for Olympus Pen E-PL1 | PEN E-PL2 | Pen E-PL3 | Pen E-PL5 | Pen E-PL6 | Pen E-PM1 | Pen E-PM2 and more. .. [Li-ion; 1100mAh; 7.4V] (Electronics)
4 times cheaper than the original batteries, for the same capacity. The brand has the most serious air that no-names that can be found elsewhere.