Amazon.com : Wasabi Power Battery (2-Pack) and Charger for Panasonic DMW-BLF19 and Panasonic Lumix DMC-GH3, DMC-GH4 : Digital Camera Batteries : Electronics
Genuine PANASONIC DMW-BGGH3 DMC-GH4 BATTERY GRIP FOR LUMIX GH3 AND GH4 DSLR | eBay
Battery or charger for Panasonic Lumix DMW-BLF19 DMWBLF19 DMC-GH3 DMC-GH4 DC-GH5 | eBay
Letus35 DMW-BLF19 Dummy Battery to 2-Pin Power Cable LT-GH4-2PIN