Hi. I have a 2001 750iL which has 2 batteries (original BMW). The other day the car would not start so had to get it jump stated off another car. I have driven 150mies.
Thinking that I need to replace them, I was having a look at the batteries (located in the boot) and I noticed that there was an indicator which tells yo the state of the battery. The indicator was black suggesting that it needs to be recharged. How do you recharge the batteries?