Went to take my car to the dealer for the AKB1 recall this morning, open the door and no lights come on! popped the hood and measured the voltage, 2.0V !!!!! that battery is toast.

no idea why, wasn't seeing any symptoms of a weak battery and she's only been sitting a week.

after reading that article someone posted recently( and a few others) I decided to go with a flooded batter instead of the AGM

corrosion is my only real concern, might prep the battery box a bit if necessary to try and stave that off. battery is in a plastic tub, so little to no worries about corrosion, but I did order a absorbent mat just in case.

 

All my cars have AGM batteries with no issues, I suggest looking elsewhere !

 

What model year, and how old is your battery? My 971 just spent a week in the shop while they tried to track down the cause of my dead battery (10 months old).

H

 

2010, the battery is just a little over 4 years old

haven't had a chance to install the new battery and trouble shoot yet. hopefully it is just the battery and not something that cropped up and is draining it.

I did use a standard battery tender on it all winter, wonder if that might have affected it

 

I've had mine since mid 2012 and haven't had any issue with the battery. Seems too long...

 

You've got a good run going I think how and where they are used plays a large part in how long they last.

 

I've had brand new batteries fail in <2 yrs, the first one in my Panamera was an example,replaced under warranty. Current battery is a AGM installed 8 years ago. My VW SUV has an AGM in it for 7 years and the BMW has had one in for 6 years. I use a battery tender when the cars aren't in daily use.

 

An interesting statistic, AGM batteries fail more often in cars that require the dealer to program for a new battery than in cars that don't. I wonder why that would be...

 

Does anyone know the battery size and brand our cars need? I have a 2013 base Panamera. I was told I have to have a OEM battery because they have a microchip inside and any other battery will not be able to be programmed.
Can anyone confirm this?

 

The Battery size in a Panamera is a Group49 also know as a H8 size. There is NO micro-chip in ANY Lead/Acid Battery. So any quality brand would work fine. Keep in mind only about 4 companies supply ALL the Lead/Batteries to the market... for example Johnson Control .... controls the market and they make the Bosche... which is the same as the Walmart Platinum, which is the Same as the Autozone higher end model ( can't remember the name) and same as the Banner that usually comes with the Porsches.. IF they have the EXACT same looking case they are 95% the exact same battery made by the same company with a only a different lable on them. The Micro-chip thing is nonsense unless he mean something about the Car having a MIcro-Chip on a Hybrid Panamera. But any quality H8 battery would work fine and you car would NOT know the difference.

I would not use a FLA (Flooded Lead Acid) Battery because they usually have venting requirements... and this could pose a battery leaking problem... rare but not something to want to engage with in a nice vehicle. They are not bad... just and older style.

The FLA and AGM have different charging requirements from the Cars system... so that is why they have to program the car differently for each type... Usually AGM is charged to about 13.8v max and the FLA about 14.4v.

Last this programming stuff is pure boloney that we will have to live with. Yes its smart that seemingly the Car would have a charging profile to match the battery type... but what is boloney is that they are doing this not only for that, but to make sure you are putting in they battery THEY want you to put in so you don't go aftermarket. Then they say stuff like it will damage the Car and it won't... you could actually use most any Battery in the Car actually. And it has been shown that NONE of these Cars with their new charging profiles are lengthening the battery like. In fact the norm and what I feel is the built-in obsolescence is not about 4 years for a battery... they used to get 10 year when I was younger, and without all the computer controlled charging!

Also in many cars like BMWs requires you to register the battery with a number off the battery that only certain brands have.... which is boloney and forces the non-knowing Consumer to buy the Porsche, or BMW brand at a 60% higher cost, plus the labor to do this. So in effect is a control that corporation are doing more and more so you have to stick with their products, and take it to THEIR mechanics and such. This way they retain full control over their vehicle, the warranty and getting every penny they can out of each vehicle that is sold....

Wow , that was a rant and a half, I went a little off the deep end, but its frustrating from a Consumers perspective and when there has been no actual improvement in battery life. This helps my company to a degree but is still nonsense..

 

Speaking of batteries, I take it those 2 connectors in the engine bay are the charging points versus connecting to battery in rear directly? Also, is it better to charge at 2,10, or 20 v rate? Good luck getting it fixed DogWood.

 

Good to know I was thinking that any Group 49 would fit!

 

2013 970.1 or 970.2? (dunno if the battery changed between the two) Early 2013 970.1 here (Platinum Edition) still on its original battery (so nearly seven years old) and still running strong. My Panny is my daily and I take it the battery kinda likes that although I know at one point I'll have to change it.

 

I replaced my battery by porsche shop last year

 

I had the same problem with my 2010 Panamera S. Very sudden drop in Battery Voltage.
Replaced it with a Sears Die Hard Battery which it sucked down to 5 Volts within a few Days.
Checked Current Flow with a Meter which measured 8 Amperes when parked which is HUGE.
Car wouldn't start even with new Battery. Had car flat-bedded to my Porsche Dealer.
Also showed system faults and warnings on the panel.
I told Dealer to re-enter the Cars Program before spending many expensive hours to diagnose.
Dealer re-entered Car Program into memory. No further problems found. Everything worked normally again.
Traded the car in a year later for a 2015 Panamera Turbo S. No more weird warnings after Reboot.
I believe many the programs in our rolling computer controlled Cars are easily contaminated electrically
by external events such as Lightning Storms. ReBoot with re-entered program and you are good to go.