This cable will come handy to those who don’t have a 12V cigarette lighter type power outlet in their vehicle. It could also makes it easier to power your dash cam outside of your car, if you wanted to, thanks to the widely supported universal USB-C connector. In case you are tempted to use a regular portable battery to power it in your car in Parking Mode, however, please avoid doing so. The batteries made for charging phones and other electronic devices are generally not designed to work in extreme temperatures. They could represent a fire hazard in case they are left in a parked vehicle or even in a running vehicle in direct sunlight. Compatible Dashcams: DR970X Plus / DR970X LTE Plus Series, DR770X / DR770X LTE Series, DR590X Series. Not compatible with DR970X Box Plus and DR770X Box models. Cable Length : 4.5m / 14.76 ft DC Plug : Ø3.5 x Ø1.1mm Input : USB-C Max Output : 3A / 12V (36W) Weight : 0.238 lb / 108 g