We tested with batteries and found the following.
Olympus OM-D E-M10 Digital Body - FAULTY + battery nothing else
Olympus PEN Mini E-PM1 Mirrorless Camera Body - Silver - Faulty / Spares
Olympus PEN E-PL8 17.2MP Mirrorless Camera - (Body Only) - Faulty
Olympus OM-D EM-1 camera body - faulty
Olympus PEN Lite E-PL3 Mirrorless Camera Body - Faulty IBIS (Shutter Count 670)
Olympus OM-D E-M5 16.1MP Digital Camera Black - Body Only - Faulty Shutter