OBD II Memory Saver

•Special adapter to prevent lose any data from replacing car battery

•Connect this adapter from battery 9V dry battery or 12V battery to OBD II plug for continue power supply
•2 LEDs to show, if the battery with enough power
•Application: vehicles equipped with OBD II connector
•Functions: LED display, disconnected protection, low battery capacity alarm
Instruction:
1 Remove the key
2 Connect power backup to the OBDII connector on the vehicle
3 Go step 4 after first green light. It is bad connection or unavailable detection when you cant' see the first green light
4 Connect spare power (9V or 12V battery are both available) 12V battery is recommended
5 Make sure there are 2 green lights, the red light means the capacity of spare power is not enough, close all doors, replace the battery