FMB003 device is connected to the car OBD. The device works perfectly, but it significantly drains the car’s battery when the car is stationary.
The car’s fully charged battery is 12.7V, drops to 12.5V in 1 day, and then 12.3V by the end of the second day.
I think this is not normal, freezing the device does not justify this. You probably have some device active on the canbus. Does anyone have this experience? What can be done in this case?
If the ignition or movement source is not properly configured or fixed then there is a chance that the device will stay working even if the vehicle is off.
You can also enable the sleep mode to save the battery of the vehicle: