The standard power cable is 4M.
D2000 power cable for A119V2/ A119V3/ A129/ A129 Duo/ A129 DuoIR.
https://www.viofo.com/en/accessories/40-d2000-dual-usb-car-charger-for-a119a119v3a129-duoa129-duo-ir.html
D3000 power cable for A129 Plus/ A129 Plus Duo/ A129 Pro/ A129 Pro Duo.
https://www.viofo.com/en/accessories/206-d3000-dual-usb-car-charger-for-a129-pro-duo-and-a129-plus-duo.html
And the 50CM mini USB cable is the same for A119 and A129 series, while it is for data transferring.