Just make sure if it is the alternator(have it tested at a shop, usually free of charge) make sure you get a new alternator instead of a rebuild. ANd try avoiding draing the good battery. Its bad enough the alternator is going out, no need to buy an extra battery.
"I never met a girl that make me feel like you do,..you're alright...Whenever I'm asked who makes my dreams real, I say that you do, you're alright..
Baby, baby, baby.. I'm bringing you a love that's true..Baby, baby, baby.. I'm bringing you a love that's true.."
Bimmerfest BBQ 2014