Battery Deka or OEM Volkswagen

Me too. Using a Deka ETX20 right now. Scooped it for $85 shipped from Tri-State Battery. I just got my car back on the road, so I haven't seen how well it holds its charge without running the car every day though.

Great thread. I have used lightweight batteries in all of my builds. Dont buy Braille or any high end BS. They are all rebranded Deka. Ended up grabbing a etx14 power sports battery from autoquest for $70. Same as the Deka ext14 just rebranded.

In sum, I can fully recommend the Deka ETX30L battery for long-term and continuous use in our cars.

Yes it does sit inside of the frame rail. When my A2 was a daily driver year ago, I ran the same battery. The battery fit perfect and did not hit the power steering bottle at all.

I decided to stop by the dealer today and check if they had any. Sure enough they did but wanted $15x.xx for it. I mentioned that I had found a lower price online but didn't want to wait for shipping to my surprise they offered to sell it to me for $126. I was really happy with that so I bought it and installed it this afternoon. So for anyone that may dig up this thread searching in the future, 000 915 105 DE fits and works great in a mk2 :thumbup:

I have some extended experience with a lightweight battery in my daily driven 2006 Boxster S, which is well known for the demands it places on the battery. In spite of that, I successfully used the Deka ETX30L (21 lbs.) for almost 3.5 years.

EDIT: Confirmed fitment (duh) and ordered the Deka through Batteries Plus. This battery seems to be best fit as its reserve capacity is nearly double that of the Optimas.

I have had excellent results from a Deka Intimidator 9A48 High Performance AGM Battery Deka / Remy part # 9AGM48 installed Dec 2010

Just use a Deka ETX20L. I think they're 15 pounds or so and they're cheap and widely available. Mine seem to last about 2-3 years, although they usually die from me forgetting to turn the headlights off. I was able to recharge my last one using a wall charger and I squeezed another 6 months out of it before finally replacing it.

VW Factory battery from the dealers are over rated, they lasted about 3 years... Disappointed... and over rated.