I had bought before my vacation two batteries of this type, since the Olympus E-PL1 but much more energy is needed (compared to my SLR). I had charged and tested both batteries again. Then two days before my vacation, I invited both batteries with the Olympus original charger on again. When I wanted to use them then four days later, both batteries were empty. After recharging both batteries only held about half a day (about 40-80 images), as compared to holding the original battery from Olympus for several days, or approximately 200-300 images. Also interesting is the original battery has a voltage of 7.2V indicates that battery is 7.4V however. Maybe it is due to the lower charge voltage of the original charger that the battery could not be fully charged. In addition, it gives me a bit fishy, operate my camera with a higher voltage when the batteries should be charged with another charger (I used the original charger, the voltage was fortunately not exceed).
