Amazon.com : Wasabi Power Battery (2-Pack) and Dual USB Charger for Panasonic DMW-BLF19 and Panasonic Lumix DMC-GH3, DMC-GH4, DC-GH5, DC-GH5S, DC-G9 : Electronics
Amazon.com : Wasabi Power Battery (2-Pack) and Charger for Panasonic DMW-BLF19 and Panasonic Lumix DMC-GH3, DMC-GH4 : Digital Camera Batteries : Electronics
BM Premium DMW-BLF19, DMW-BLF19e, DMW-BLF19PP Battery for Panasonic Lumix DC-G9, DC-GH5, DMC-GH3, DMC-GH3K, DMC-GH4, DMC-GH4K Digital Camera - Walmart.com
ANDYCINE DMW-BLF19 Dummy Battery for Lumix DMW-BLF19 Battery Converter Compatible for Lumix DMC-GH3,DMC-GH4,DC-GH5 (V1)
Panasonic Battery Grip for Lumix GH3 and GH4 Digital Cameras at Acephoto.net