panasonic just did a firmware update for GH2 ttiled-" battyer compatibility"
2018/7/25
Ver. 1.2
Improve the compatibility of Panasonic battery.
http://av.jpn.support.panasonic.com/support/global/cs/dsc/download/fts/dl/gh2.html
2018/7/25
Ver. 1.2
Improve the compatibility of Panasonic battery.
http://av.jpn.support.panasonic.com/support/global/cs/dsc/download/fts/dl/gh2.html