ONEU OBD2 Cable, 8Pin OBD II Male to 90 Degree Micro USB Intelligent Power Charging Cables for Cell Phones Mobile Phone GPS DVR Tachograph and other devices Wire length :3 metres(10 feet) ,High efficiency conversion rate from 95% to 98% when 12V input and from 88% to 90% when 24V input,both loading 5W5 1.6A overcurrent protection with accurate current limiting from 0-2A 5.6V overvoltage protection from damaging devices 11.5V low voltage protection detected automatically to avoid excessive loss of storage battery causing unsuccessful ignition Short circuit protection to reduce the possibility of spontaneous combustion