lineyho

I bought an OBDII bluetooth scanner which is powered on even when the car is off. There is no on/off switch on it. The led is lit. It's a battery drain issue. I have not checked the actual draw on the battery yet, but the unit is slightly warmer than the iother plastic nterior componets sitting overnight. Is it typical that all these units are on once they are plugged in and has anyone checked the draw ? My unit was purchase off amazon, but it is probably the same as all the other Chinese units on Ebay. Thanks