This adapter will work with any camera body that uses the DMW-BLC12PP battery like the GH2. Both of our battery systems will effectively provide power to your camera for many hours, which is essential for those long working days. Our Battery model JB4600v1 provides 2.5x more capacity than the standard DMW-BLC12PP battery and the JB9200v1 model provides 5x more capacity! The adapter is pretty straight forward and very simple to use, just install the end that looks like a battery in your camera’s battery compartment, pass the power cable through your camera’s built in rubber door and connect the other end to your battery. The adapter uses digital switching technology to regulate and lower the 12V voltage from the battery to 7.4V to match the camera's power requirements.