ran the radio in my E36 only about
45 minutes with the engine off
and couldnt start the car, got the clicking sound.
got a battery boost a.drove around and car starts fine.
looked at the battery and the water was low
on 4 cells so that the top
of the plates wasnt covered .
so i added water.
are these batteries really maintenance free ?
then why does the water disappear ?
how do i test to see if i need a new battery ?
car is 8 years old
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