[jzwu]

My Macan S hasn‘t been driven for 2 weeks, and last drive was kinda short for about 15 mins only due to the new lockdown measures.

Today I checked the battery voltage on the MFD with the key on the accessory position, it was 11.6v. I remember the previous voltage was like 12.4v. But the car started right up with no problem at all. I drove it on freeway for 25 mins and the alternator charging voltage was 14.8v.

i think my 5-year old OEM battery is still good.

 

[Wolverine]

My Macan S hasn‘t been driven for 2 weeks, and last drive was kinda short for about 15 mins only due to the new lockdown measures.

Today I checked the battery voltage on the MFD with the key on the accessory position, it was 11.6v. I remember the previous voltage was like 12.4v. But the car started right up with no problem at all. I drove it on freeway for 25 mins and the alternator charging voltage was 14.8v.

i think my 5-year old OEM battery is still good.

One significant piece of information you didn’t mention is what the temperature of the battery was when you measured the voltage.

 

[JoeInBucks]

Thanks. Do you recall exactly what the warning message says?

Not exactly but something like “Battery charge level is low. Drive for an extended period or charge the battery”

 

[jzwu]

One significant piece of information you didn’t mention is what the temperature of the battery was when you measured the voltage.

The current ambient temp in SF Bay Area is 50-65F.

 

[Shark]

The current ambient temp in SF Bay Area is 50-65F.

This might interest you.

 

[wasupdu]

I plan on keeping the vehicle for another couple years or so as I've been tempted by the hopeful Tesla S redesign.

If the battery died I wouldn't hesitate in the slightest to pick up whatever is available at Costco or the like. No way would I go to the dealer.

 

[grim]

This might interest you.

Good battery analyzers compensate for temp in determining SOC

 

[elveez]

So, what would be the minimum voltage for a good battery after the car sits for a long time?

I am in COVID-19 lockdown like many of us, and my reading was 11.7v after couple of weeks. In Minnesota (30-50 degrees right now).

My Macan S hasn‘t been driven for 2 weeks, and last drive was kinda short for about 15 mins only due to the new lockdown measures.

Today I checked the battery voltage on the MFD with the key on the accessory position, it was 11.6v. I remember the previous voltage was like 12.4v. But the car started right up with no problem at all. I drove it on freeway for 25 mins and the alternator charging voltage was 14.8v.

i think my 5-year old OEM battery is still good.

 

[jzwu]

You can still drive out from time to time. Taking a 30 mins drive on the freeway every week is good enough.

 

[grim]

You can't trust the MFD voltage in the accessory position. Its showing you the voltage with the computers firing up from being asleep. You got to put a meter on the battery or use a battery analyzer on the battery to get the true voltage at rest. Even then, just opening the hatch fires things up but at least the accessory position is not on.

And if your state shows lockdown, not driving other than to essential services, then no you can't go for a joyride, state dependent upon their executive orders, legally, You need to read your states executive order and the penalty for not complying.

 

[elveez]

You can still drive out from time to time. Taking a 30 mins drive on the freeway every week is good enough.

I understand, it was a more of a theoretical question, like how long can I go without starting it up and what is the minimum voltage I need. I left mine in Minnesota winter on the airport for a week and it started up just fine.

 

[jzwu]

The longest I haven't started my Macan was 3-4 weeks without any problems, but the climate here in SF bay area is very mild compared to MN. Battery condition is dependent on many factors, including temperature.

 

[wwahl]

AutoNation just came out with a 25% off ad that would cover batteries. They own Bellevue Porsche. One might give them a call to see what it would cost for a real Porsche battery.

 

[e61it]

Autonation site doesn't show 25% off add. Interestingly, the lifetime battery replacement offer not offered for Porsche.

 

[wwahl]

Autonation site doesn't show 25% off add. Interestingly, the lifetime battery replacement offer not offered for Porsche.

Hmm. This ad came out April 2nd, so it wasn't an April Fools joke. I am located in Washington, if that makes any difference.

 

[Vutran]

I've searched the forum but can't find a reference to correct battery size for my 2015 Macan Turbo.
Is group 49 the correct size? I've located an AC Delco AGM on Amazon.
95ah 13.9x6.9x7.5 inches.
Surprised there's not more talk on replacement batteries. Thanks....

I've searched the forum but can't find a reference to correct battery size for my 2015 Macan Turbo.
Is group 49 the correct size? I've located an AC Delco AGM on Amazon.
95ah 13.9x6.9x7.5 inches.
Surprised there's not more talk on replacement batteries. Thanks....

You should buy it from dealer, it requires to have serial number to program into the car’s computer.

 

[Chris in Philly]

You should buy it from dealer, it requires to have serial number to program into the car’s computer.

Welcome to the forum. The two posts you quoted are about 2 1/2 years old, and at this point there’s been a huge amount of discussion on this, most of it within this very thread.

I would just point out there is not a uniform agreement with what you are saying. There is at least one aftermarket battery supplier who says what you were suggesting is not necessary.

 

[Chris in Philly]

And if your state shows lockdown, not driving other than to essential services, then no you can't go for a joyride, state dependent upon their executive orders, legally, You need to read your states executive order and the penalty for not complying.

”But officer, I was not joyriding. I was looking for an open supermarket.“

”But sir, you are more than 50 miles from home”.

” I knew I should’ve bought those navigation updates from Porsche“

 

[PeterVV]

I can confirm the Autel MD808 will register a replacement battery for the Macan just as Alessia3 described above in post #440. This was on a 2016 S gasoline engine.

Bought the MD808 from obd2tool.com for $208 delivered.

H8 95AH AutoCraft AGM replacement battery came from Advanced Auto ($199.99 less 20%) plus a $22 refundable core charge.

Installation and programming with the Autel tool was as straightforward as could be. The 15 place serial number as well as the 11 place Porsche part number serve no purpose other than to provide subsequent technicians with the history of battery changes in the vehicle.

 

[Shark]

The 15 place serial number as well as the 11 place Porsche part number serve no purpose other than to provide subsequent technicians with the history of battery changes in the vehicle.

I assumed this to be the case. Difficult to imagine the car would be able to act upon part and serial number data.