Resurrecting this thread - the absolute best battery is AGM Odyssey. Have a google search to read up. I apply these on our offshore generator systems for the past 12 years, and fitted one to my S8 recently 3 years ago.
__________________
Present cars
Daily driver: BMW e65 730d
Batmobile: 2006 S8, D3, 4E 5.2L V10 BSM with (loud) Miltek SS exhaust, Carbon Fibre trim, Alcantara headlining, soft close and keyless entry. 
|