transae

Batteries are are batteries. Its a Bosch battery. Pep boys carries the brand. They last 4-6 years. I replace mine every 3 plus years so I don't have to deal with a dead battery. First time it was about 105 and I used a 20% off to get it about 85. Just bought it for 113 now with 20% off so 95 or so after tax. I've disconnected my batteries multiple times before. Nothing happened. No manufacturer would build a car that would be that messed up if u remove the battery. Don't live in fear. It's an easy battery to take out. It's in your trunk. Just a wrench needed. No back up battery needed

aligzaidi110

I bought mine from Bosch pepboys and it worked! almost 8 months no issue at all.

boldenwell

Just DIY replaced the OEM Varta 95Ah (760CCA?) for my 2005 A6 3.2L. That's around 9 years of life, unbeliveable. I've been warned about it during the last service, but I managed to have another year before it finally gave up. Maybe the battery lasted that long because it is located at the boot, away from the engine heat.

I replaced it with another Varta, hoping it will last the longest. The replacement is rated 100Ah 830CCA and costs $360. The only available cheaper alternative was a Century DIN92MLF for $250 (735CCA with 92/95Ah?). The guy in the shop reckons that the Varta would last 4-6 years, while the Century 2-3 years. Maybe he was derating the Century to make me spend an extra $110. But considering how the original Varta has performed, I'm happy to spend the extra $.

A bit more research after the job, I discovered that the Varta was actually a Silver Calcium type one. Hopefully, this is still OK.

I agree with transae's comment "No manufacturer would build a car that would be that messed up if u remove the battery". The manual doesn't say anything about not doing DIY. Everything seems OK after the replacement. The battery was charging fine, the MMI is operating OK, and doing the in-built 'check button' doesn't reveal any abnormal activity. The only thing I need to set after was the clock. I'll ask my mechanic to check/clear/set the records (VAGCOM) about the new battery at the next service.

jimjpublic

So what is the answer to battery codes? I've seen debates on this back and forth. Some do, some don't. Does it depend on the car model?

uberwgn

Jim, it's a minor issue if you have permitted the battery to go completely dead. The management system, BEM, reduces the output to various systems as the battery's output drops. It's best in this case to re-code so the BEM knows a new battery has been fitted. If no coding, the BEM takes time to learn/adapt that a new battery has been fitted and may be slow in returning all things to 100% ("normal").

uberwgn

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