@Nigel what are the specs for a top quality USB cable?
How is the rear cam USB cable connected to the front cam hardwire kit? Would want to utilize the hardwire kit battery protection to minimize the risk of rear cam draining the car battery.
Also will a larger addon fuse be required since 2 cams are connected to the hardwire kit? If yes how large a fuse?
Not sure if this is a workable idea, but I'm thinking about getting a battery jump starter like this
https://m.aliexpress.com/item/32919...d=2656amp-_Ft9ueDHY-z90jPdstMRXg1547188336605
It looks like a glorified battery pack, so thought it might be an idea to connect both front and rear cams to the jumper starters USB ports, and connect the jump starter to the cigarette lighter. In this way if I've the car in the garage I can switch off the jump starter to power off the cams. Or switch on the jump starter to power on cameras if I'm driving or want it in parking mode. Also can still use the jump starter as a jump starter if I need it!
One concern I have is the reliability and safety of the jump starter as it's a lithium ion battery, that's why I thought it better to connect the jump starter to the cigarette socket rather than the hardwire kit to prevent overcharging/overheating of the jump starter battery.
@Nigel @SawMaster would be interested in hearing your thoughts this jump starter idea?