Quote:
Originally Posted by ec126
I just bought a BMW branded tender (CTEK) and leave it plugged in and connected to the car, is it safe to keep the battery always topped off? Would this be bad for the battery in the long run too? Sometimes when I see it is at stage 8, I unplug it, knowing that the battery is topped off. I could be wrong.
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the trickle chargers are smart. you set it and forget it.