Has anybody tried this combination? I've been reading various threads about the Lumix GH2 using a DC coupler attached to an external battery with the 9V selector working successfully. I know the GH2 uses a battery similar in voltage of 7.2v and the Coupler accepting up to 8.4v when connected to the AC adapter. Everything from the GH2 sample makes me believe the GM1 will be no different considering they're both the same in terms of voltage. I'm just chicken when it comes to actually trying it out. My question is has anybody already done this with the GM1, if so, can you confirm yay or nay on this? These are the items in question: 1) DMW-DCC15 2) Anker 2nd Gen Astro Pro 15000mAh Triple-Port External Battery with PowerIQ™ Technology The GH2 external battery mod Link Here The reason for this is for multiple reasons including extended timelapse, astrophotography (battery drains fast in the wee night time) and just having a longer running battery when no where near an outlet for charing battery.