Gold dust

Spare batteries for the Olympus E-M5 have been like gold dust - very difficult to locate. One I ordered in June finally arrived while I was away last wee. Unfortunately it proved to be faulty - a very tight fit in the battery charger, when I attempted to charge it the light on the charger started flashing (normally it is on continuously while charging, then switches off when charged), there was a small bump on the one end, and I suspect that if I had put it in the camera I would not have been able to get it out again. Goodness knows when I will get a replacement.