Originally Posted by pride355
I think CSL/Mini battery is a good comprimise with 55Ah compared to 90Ah of stock E9X battery.
58lbs vs. 34.4 lbs worth the money.
I am not convinced at 21lbs or 17 lbs 30Ah lightweight batteries.
Not sure if it was this thread or another but problems with the 55 Ah mini battery have been reported as well. Seems like a problem on some cars and not on others. Good luck, do keep us posted.