Batteries and capacitors serve a crucial role in dashcams, primarily providing power when the vehicle is turned off.
Contrary to popular belief, the internal battery in a dashcam is not meant to power the device continuously, as the primary power source comes from the vehicle through various means like a cigarette lighter adapter, USB ports, hardwire kit, or an external battery pack.
The battery’s primary function is to supply sufficient power to allow the dashcam to shut off properly and complete tasks like saving files when the vehicle is turned off. Additionally, it is necessary for maintaining the real-time clock for timestamps when the dashcam is not in use.