One of my friends left my PA System on in the Mini (I need to wire it to something that's only on when the car is on, any ideas? Not the outlet though, already in use) and now my battery is dead, finally got it to jump start, ran it, then turned it off and nothing. Tried to put it on a trickle charger and it won't even take a charge. Anyway, I am looking for a good battery, not too expensive but one that will handle some 10's, pa, and underglow. Any references to websites or stores will be great! Thanks!

Also, I have noticed some condensation/a little water in the battery box, why is this? 2003 R53.

 

Here's a list of non OEM batteries that could save you some money.

 

Thanks!

Edit:

Just checked, all those batteries are now running about $100 or more. Looks like I will have to spend the money, the Mini is deceased now! Not good! I need to bring it back to life again!

 

Check Autozone or O'Reilly's for pricing.

 

Are those batteries in the link the same physical size as the OEM one so you don't have to play around with mounting them?