I know that the G1 GF1 and GH1 can interchange battery, but I wonder about other models ... are they each on their own with respect to charger and interoperability?
I have not kept up on this topic
PS: just found this
The GF2 acquires a new battery, the DMW-BLD10, which is slimmer and therefore has slightly lower capacity than the GF1's (7.3Wh vs 9 Wh). According to CIPA standard tests this should give around 300-320 shots per charge, depending upon the lens used; down from the GF1's 380 shot rating.