Battery charging

[robert.lye]

Hi
I have not driven my 981 2.7 Cayman for 2 weeks due to the stormy weather etc. I am just about to go France for 2 weeks but using my other car.
Would it be fine to still leave the Cayman as is?
I have purchased a Nocon battery optimiser but not yet fitted the flylead. I could just use the croc clips.
The car sits on a drive and is covered.

My other car, Audi Q2, sits on the drive all the time, never covered or hooked to a charger and I have left that for up to 6 weeks with no problems starting over winter.

Its just that I’ve seen so many doom and gloom stories about Porsches and flat batteries that you tend to get concerned where normally I’d just ignore it.

Personally I think that the battery should be ok for what will be 4 weeks or so of the car not being used. We’re talking modern electronics now not old lead acid stuff, but happy to be proven wrong.

Thanks for any replies.

 

[BrianJ]

Are you feeling lucky? The trouble is, you will only find out when you get back. Lots of variables in there, depending on age and condition of battery, temperature, etc, etc. If you've already bought a charger I would suggest you connect it up and use it. The hassle of finding you've got a flat battery and can't get into the car when you need to can be at least 100x the hassle of connecting your charger.

 

[Motorhead]

I agree 100% with Brian’s comments Robert. You’ve purchased a battery conditioner so you might as well put it to good use while you’re away, and it’s perfectly safe to leave it connected to the battery using either the flying leads or croc-clips. You can feed the cables through the gap between the wiper panel and the top of the bonnet without fear of pinching them.

On your 981 connect to the positive terminal of the battery and a suitable earthing point on the body [I think that there’s an actual earthing post … check your Driver’s Manual].

Jeff

 

[BrianJ]

On the 981 there is a marked earthing post shown in the Driver's Manual on the bottom of the wiper linkage on the other side of the car from the battery +ve terminal. That can be a bit of a stretch, depending on the length of leads supplied. If you are using eyelet flyleads, there is a spare threaded hole (M10 I think) in the suspension turret close to the battery - scrape the paint off the top of that and use it for the ground (-ve). On the +ve terminal there's a nut (M10 spanner) which is easily removed and used to capture the +ve eyelet. Be careful not to drop the nut - it can easily disappear! If connecting the eyelets as indicated, thread the cable around not over the pollen filter housing which is between the battery and the suspension turret so as not to obstruct servicing.