Well Viofo says that is working without the kit:
support.viofo.com/support/solutions/articles/19000109196-when-the-car-is-stop-and-the-cam-is-off-could-it-be-possible-to-plug-the-cam-to-a-portable-charger-s
Moreover my Skoda Octavia 3 (2019) car battery delivers only 11.4 V when the engine is...