If I leave the car in the garage for a week or so without starting it, it barely or does not crank over, so I have to charge it every time. Does anyone have this problem and does anyone use a battery tender?
The service guy at the dealership says, "these cars usually need a battery tender". I dont believe it.

 

Have somebody check for a parasitic battery drains and have them check your alternator if your Amperage gage isn't showing around 13.6 VDC after a few minutes of driving. Also if battery is getting old, change it out.

 

You need a new battery, or you have a short or left some accessory on. Buy a new $50 battery and move on. The battery should last just sitting there in the COLD for more than month, otherwise one of the three above problems has occured.

The service guy who said "THESE" cars need a battery tender is wrong. ALL cars need a battery tender IF they are just sitting around for months on end. However, no properly operating car with a good battery should go dead in a month of just sitting around.

I laugh every time that people have unique solutions for things like this simply because the car is a PORSCHE. The electrical system is not something mysterious or any diferent from any other car you drive. Whatever you would do to your 1972 Oldsmobile in the same circumstances, do for the Porsche.

 

The batteries do not last forever. I plan on being proactive and replacing mine every two years. If the battery is not shot, you may just need to perform some maintenance by adding some distilled water. We need to remeber that the battery is not maintenance free.

 

I bought the car 5 months ago and it came certified with a 2yr warranty. I'm hoping it's just the battery and they'll change it out.....for free. They might have just dished the car out with the exsisting battery, not knowing it was about to expire. We'll see if they hold up to it.

 

that i had the battery problem (like yours) before and it would lose charge. My dealer was nice enough to replace it under warranty. not many dealers change battery under warranty.

good luck.

(it's your battery, change it)

 

your telling me to change it myself when you took yours to a dealer....
you make me angry sir.

 

Unless the dealer is going to replace it for you free, replace it yourself with a battery from Walmart or Costco or similar retailer. Shouldn't pay more than $50 for the battery.

 

A battery is like a piggy bank. If you keep taking out and putting nothing back you soon will have nothing.

Only 30% of batteries sold today reach the 48-month mark. In fact 80% of all battery failure is related to sulfation build-up. This build up occurs when the sulfur molecules in the electrolyte (battery acid) become so deeply discharged that they begin to coat the battery's lead plates. Before long the plates become so coated that the battery dies. The causes of sulfation are numerous. Like, batteries that sit too long between charges. As little as 24 hours in hot weather and several days in cooler weather.

Remember you must put back the energy you use immediately. If you don't the battery sulfates and that affects performance and longevity. The alternator is a battery charger. It works well if the battery is not deeply discharged. The alternator tends to overcharge batteries that are very low and the overcharge can damage batteries. In fact an engine starting battery on average has only about 10 deep cycles available when recharged by an alternator.

This is information I had posted before, hope it helps. Gotta love the internet.

 

Oh boy. Not only is Robyn an expert on oil leaks but electrolyte leaks as well. Hey Robyn, can u fix my leaky toilet? Oh yea, please take a look at my roof and balcony also.

 

Now that is the first time I have ever heard of "Yellowmbr" referred to as "Sir" on this board...

 

hopefully you get lucky and that dealer will do it under warranty.

let us know.

 

Nice avatar, i like your options on the car.
Can you post some pics of it?
X50 with the options you have, that's my next car.

 

I have a P car that I don't drive much. The battery should last longer than a week, your battery is bad. I have left mine for a month before and it will start...

I did purchase a battery tender, they work great. I'd suggest getting one if you leave your car for a while (greater than a week)...

Good luck.
Roy

 

Just buy the DieHard for $99. The OEM battery is meant to be replaced.