Why does Panasonic refuse to standardize their batteries? The new GF6 introduces yet another proprietary battery. By my count this will be the sixth different battery that Panasonic has used in its :43: cameras, none of which are interchangeable AFAIK. On the other side of the fence Olympus has just three battery models, but two of these (the BLS-1 & BLS-5) are all but interchangeable and can be used in ANY of the PEN cameras. The only Olympus camera with a unique battery is the OM-D. Not having to buy another backup battery or two takes some of the sting out of upgrading ones camera. I realize that Panasonic would likely provide some technical reason citing voltage needs and form factor that it would have been impractical to implement any of the battery designs they already have in the new camera. Perhaps the capacity of the new battery needs to be greater to power all of the WiFi and NFC capabilities and to power the hi-res screen. However, its not lost on me that the profit margin on additional batteries is likely higher than the margin on just about anything else they sell.