Amazon.com : Wasabi Power Battery for Panasonic DMW-BLF19 and Panasonic Lumix DMC-GH3, DMC-GH4, DC-GH5, DC-GH5S, DC-G9 : Digital Camera Batteries : Electronics
Amazon.com : Panasonic LUMIX GH4 Body 4K Mirrorless Camera, 16 Megapixels, 3 Inch Touch LCD, DMC-GH4KBODY (USA Black) : Electronics
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Amazon.com: Synergy Digital Camera Battery, Works with Panasonic Lumix GH4 Digital Camera, (Li-Ion, 7.4V, 2100 mAh) Ultra Hi-Capacity, Compatible with Panasonic DMW-BLF19 Battery : Electronics