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Dead battery, power window closing.



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MIT

Club Member

Fri 08 Jun 18 14:50

Dead battery, power window closing.


Hi, I took delivery of my first c3 today, a 74 coupe. It had a dead battery, and the drivers window is down and canít close it. Iíve had the battery on charge for a while, but looks like the battery might be toast. Is there a way to close the window without power? Iíve got the door card off but nothing obvious.

Cheers, tim.


--------------------
Tim.

74 coupe.

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Redlevel

Club Member

Fri 08 Jun 18 14:58

Re: Dead battery, power window closing.


Jump it with another battery.. Scratchchin

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MIT

Club Member

Fri 08 Jun 18 17:38

Re: Dead battery, power window closing.


Hi, yes I had a duff jump lead, which made me think the window motor was at fault, got another set and allís good. Windows up. Thumbs up


--------------------
Tim.

74 coupe.

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chevrolet

Club Member

Fri 08 Jun 18 17:51

Re: Dead battery, power window closing.


Is the battery in the car showing a voltage below which the charger will not recharge it (see charger handbook if you have one)? Had that problem myself the other week (stupidly let it run down).

Solved by attaching discharged battery in car to a good battery with jump leads, leaving it for a while, and then attaching the charger on discharged car battery with jump leads/good battery still connected. Disconnected jump leads/good battery when discharged car battery showing a voltage at which the charger will charge it. (Thanks Tayna batteries for the advice/tip. See also YouTube - Recharging a deeply discharged battery)



Last edited by chevrolet on Fri 08 Jun 18 18:40; edited 2 times in total. [27 %]
--------------------
AKA "Silver C6" on Pistonheads

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MIT

Club Member

Fri 08 Jun 18 19:19

Re: Dead battery, power window closing.


Hi, yes, I had it on charge for quite a while, and it didnít recover at all, although charger was showing a 4A draw. I might give that a go regards spare battery, I have a large leisure battery I can use.
Thanks for the heads up, I was going to go to Euro Car Parts and buy one tomorrow, £120. Surprised


--------------------
Tim.

74 coupe.

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chevrolet

Club Member

Tue 12 Jun 18 16:28

Re: Dead battery, power window closing.


Did it work? My Lidl (or Aldi?) version of a CTEK, won't recharge a battery that's showing below 3.8V per the handbook.



Last edited by chevrolet on Tue 12 Jun 18 16:29; edited 1 time in total. [3 %]
--------------------
AKA "Silver C6" on Pistonheads

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BlackZeD

Club Member

Tue 12 Jun 18 16:42

Re: Dead battery, power window closing.


A Ctek is a battery conditioner not a charger.
You would need a proper battery charger for that.


--------------------
Don't take life too seriously, after all, your not coming out of it alive.

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MIT

Club Member

Tue 12 Jun 18 18:01

Re: Dead battery, power window closing.


Hi, no, I couldnít recover the dead battery, so bought a new one. Worth a try though.


--------------------
Tim.

74 coupe.

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chevrolet

Club Member

Tue 12 Jun 18 18:50

Re: Dead battery, power window closing.


BlackZeD wrote (View Post):A Ctek is a battery conditioner not a charger.
You would need a proper battery charger for that.


Mine does both, including a mode specifically for AGM batteries, like my Optima Red Top on the C6. Here's some CTEKs that are chargers and conditioners:

https://www.tayna.co.uk/battery-chargers/ctek/



Last edited by chevrolet on Tue 12 Jun 18 23:05; edited 1 time in total. [23 %]
--------------------
AKA "Silver C6" on Pistonheads

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Grahamred70

Club Member

Wed 20 Jun 18 20:38


My latest Ctek has a reconditioning setting which has successfully recovered some totally flat batteries which are still performing well months later so well worth it, in fact when my C3 arrived from the states the battery was flat, had to use a jump pack to get it off the trailer, the Ctek recovered the battery and 2 years later it still holds charge over the winter with plenty to start the car from hibernation.
Graham


--------------------
Graham, red 1970 convertible 350

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