If you are looking to charge your iVolt Mini External Battery directly from your vehicle’s 12V outlet, use the Input Cable (12V Charging Cable) for iVolt Mini External Battery. Compatible with all THINKWARE Dash Cam models. To learn more, you can read this Thinkware iVolt Mini Ultimate Guide. Cable Length: 4.0 m ( 13.12 ft) Note: If your vehicle has an Always-On 12V Outlet, this cable will not be compatible.