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    Battery maintainance/Charging

    How long do you leave your 991 undriven before charging the battery?  The manual says six weeks, which seems too  lonng.  If I park it for six weeks, should i use a trickle charge like the porsche one that plugs into the cigarette lighter?

    http://www.amazon.com/dp/B001684YCK/ref=pe_385040_30332200_pe_309540_26725410_item


    Re: Battery maintainance/Charging

    watt:

    How long do you leave your 991 undriven before charging the battery?  The manual says six weeks, which seems too  lonng.  If I park it for six weeks, should i use a trickle charge like the porsche one that plugs into the cigarette lighter?

    http://www.amazon.com/dp/B001684YCK/ref=pe_385040_30332200_pe_309540_26725410_item

    6 weeks sounds pretty optimistic based on experience with earlier 911 generations. I would definitely go with a trickle charger but also go for the fly-lead (optional extra) which attaches directly to the battery poles instead of the cigar lighter socket. It should be possible to position the connector of the fly lead so that it is just accessible below the trailing edge of the trunk lid, but still hidden from view. That way, you can reconnect or disconnect the trickle charger without having to pop the trunk lid or open a door each time, if the need arises. 

    The charger you link to is actually made by C-TEK:

    http://www.amazon.com/Multi-12-Volt-Smart-Battery-Charger/dp/B000FQBWCY/ref=sr_1_1?s=automotive&ie=UTF8&qid=1384192199&sr=1-1&keywords=c-tek+battery+charger

    PS:  If I remember the dimensions correctly, you need the optional extra fly-leads with 8mm eyelets to fit car batteries, as the ones included with the charger are really meant for 6mm battery lug bolts generally used on motor-cycle batteries. 

    fritz


    Re: Battery maintainance/Charging

    I put our Garage Queen 997S on to Charge-O-Mat life support if the car is not likely to be used for more than a couple of weeks. Car is 5 1/2 years old and still on the original battery. I plug into the cigarette lighter socket in the centre console.


    --

     

    Porsche 997 Carrera S PDK Aqua Blue / Black - Skoda Octavia Mk.3 daily drive


    Re: Battery maintainance/Charging

    I bought the smoker package for 991 specifically for this! The 997.1 had two cigar lighter (12v) inputs. The 991 didn't have one on the centre console unless smoker package was specified. Haven't used this yet, but probably will over the coming weekends as it gets colder if it remains unused. Nearly a year old now and I've almost covered 2,600 miles.


    --

    991 (what a car!) XC90 - Black/Black 2 kids, 1 dog


    Re: Battery maintainance/Charging

    which attaches directly to the battery poles instead of the cigar lighter socket

    why ? is that better ?


    Re: Battery maintainance/Charging

    I hv the Porsche one that sticks in the cigs lighter. (after a dead battery experience....)

     

    so much more convenient than popping the hood everytime since I only drive on weekends hence it;s always lefting charging during the week.

    and the cable is thick and shielded enough so I can even close the door once it is plugged in.  

    cant tell which one is better (direct bind vs cigs lighter), but I doubt it makes a difference.


    --

    BMW 1 M + C63 (gone).   997.2 GT3


    Re: Battery maintainance/Charging

    I now keep the 997 turbo hooked up to the Porsche ctek charger via the cig lighter whenever I'm not using the car.  I just had to replace the battery with a new one from Porsche (ouch) so am really keen to look after the new one.  I used to leave the car for a few weeks without any charge - big mistake!


     
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