Cheapo battery grip for g9: Micro Four Thirds Talk Forum: Digital Photography Review
Panasonic DMW-BGG9 Battery Grip For DC-G9 | Full Compass Systems
Camera Battery for Panasonic Lumix DC-S5, DC-S5K, G9, GH5, GH5S - 2250mAh, 7.2V, Li-ion | 888400989
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
Camera Battery for Panasonic Lumix DC-G9 - BatteryEmpire
Panasonic DMW-BGG9 LUMIX G9 Vertical Battery Grip New-In-Box at Roberts Camera
Amazon.com : Neewer Battery Grip Compatible with Panasonic Lumix G9 Camera Replacement for DMW-BGG9 with Shutter Release Focus Point Control Joystick Work with 1 DMW-BLF19E Li-ion Battery (Battery Not Included) : Electronics
SmallRig L-Bracket for Panasonic Lumix G9 2191
Amazon.com : Neewer Battery Grip Compatible with Panasonic Lumix G9 Camera Replacement for DMW-BGG9 with Shutter Release Focus Point Control Joystick Work with 1 DMW-BLF19E Li-ion Battery (Battery Not Included) : Electronics
Amazon.com : Neewer Battery Grip Compatible with Panasonic Lumix G9 Camera Replacement for DMW-BGG9 with Shutter Release Focus Point Control Joystick Work with 1 DMW-BLF19E Li-ion Battery (Battery Not Included) : Electronics