Autel BTMS : Battery Tester Memory Saver

The Autel OBDII Memory Saver, is a polarity-protected cable that attaches to a 12 Volt backup battery to provide power via the OBDII/EOBD port to onboard electronics while the vehicle's battery is disconnected, preventing vehicle data loss and saving the time and effort of re-coding systems.  Features surge protection and three LEDs to indicate power supply status.