This one works:

TKDY DMW-DCC8 AC Power Adapter Supply DMW-AC8 DC Coupler Charger Kit, replacement for DMW-BLC12 PANASONIC Battery DMC-FZ200 FZ1000 GH2 G5 G6 G7 Lumix GX8 G85 Digital Cameras. https://www.amazon.com/dp/B0725GJKST/ref=cm_sw_r_other_apa_i_jiG7EbM58T77D