Amazon.com : Synergy Digital Camera Battery, Works with Panasonic Lumix DC- GH5 Digital Camera, (Li-Ion, 7.4V, 2100 mAh) Ultra Hi-Capacity, Compatible with Panasonic DMW-BLF19 Battery : Electronics
CameronSino Battery for Panasonic Lumix DC-S5 DC-S5K GH5 G9 GH5S fits Panasonic DMW-BLK22 Digital camera Batteries 2150mAh 7.40V - AliExpress