camhabib

Battery finally gave out on my 2009 997.2 C4S. Called the dealership to order a new one and was told there were two variants, a 70A and 80A version. Anyone know the correct one / part number, or if there's a superior battery for equal price? Thanks.

Lvt19672

Walmart has the best battery in the business for the cheapest price.

Diamond Blue 4S tip

I believe the Walmart battery is:

Walmart EverStart Maxx H7

But now I can't remember if that battery is specific to certain years of the 997 or not.

vexed

Or if Walmart is out the Sams Club version which I believe is the same battery with a different label is the Energizer H7

kosmo

Yes walmart h7.

Made by johnson controls

jcnesq

Waste of time and money to go to the dealer. Go pick up an H7 and put it in yourself, takes 10 minutes.

docboss

I bought Exide AGM, size H7. Four year warranty. Do the install yourself. Dealer will stick you with an outrageous "corking fee". Battery was $230. AGM's supposedly do better with longer periods without charging and higher discharges than flooded cells. That's why most cars with stop/start systems come with AGM.

dasams

If you hook-up a spare battery through the fuse terminal to keep the system energized, you won't lose your settings.

Mumbles

I take my battery out every year for Winter storage. Cell phone photo your settings if need be.

Rob Heath

So are Interstate.

Mumbles

Costco has the H7 for $ 99.00

Jake951

Porsche OEM batteries are junk. I've never had one last more than 2 or 3 years. I currently have an Interstate battery (don't happen to have the model type or number) which is physically bigger than the OEM one, but it fits fine. I'm sure there are others that are good, too. Almost anything is better than the stock battery.

LexVan

Porsche OE batteries are just fine. The key to a long life (since most Porsches are driven so few miles) is the regular use of a battery maintainer. Plug in when not driven. Your OE batter will last more than 5 years.

Lvt19672

I agree the Porsche factory battery is garbage.

Mumbles

Like everything else, maintain it and it should last. What gets me is that increase in price when a Porsche label is applied.

Here in Ontario, Interstate battery H7 ......$ 250.00 Dealer new battery ........$ 305.00 plus taxes