If you are looking for a spare battery for your Olympus Em-5, you should consider this one. It fits every Olympus camera using BLN-1 battery.
I payed it just 6.89€. It’s capacity is 1020mah instead of 1220mah of the original, but you must consider this as a backup whe you run out of energy.
It comes with it’s charger because it has no chip so it’s not working with the original charger. Not a problem, i can charge them both at the same time and have to full battery ready for my shooting session.
I bought it from Amazon.