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Good idea? Connecting 12V 22Ah battery to the cigarette lighter socket

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Old 05-21-2012, 03:34 AM
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kmckmc
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Default Good idea? Connecting 12V 22Ah battery to the cigarette lighter socket

996 is parked at a garage with no electricity sockets. So, I cannot hook up a battery maintener/conditioner directly to the car.

Currently, I have Bosch S5, 74Ah battery installed.

As Porsche's cigarette lighter socket is "hot," could I simply hook up a 12V 22ah maintenance-free battery to a 996's cigarette lighter socket so that my car's battery will not run flat for about 1 month's time.

I figure the additional 12V 22ah capacity could help the main battery a bit.


What I have in mind is a Yuasa 12V 22ah lead acid battery which is light and compact (about 7inch x 3inch x 6.6inch).

What do you think? Are there any safety issues I should be concerned?
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Last edited by kmckmc; 05-21-2012 at 04:57 AM.
Old 05-21-2012, 10:07 AM
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relinuca
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Default a risky proposition

The problem here is the battery source output would not be modulated as a trickle charger would be.

Plugging in a simple 9V battery to the lighter socket supposedly will help the ECU retain settings and the radio to save the activate codes in the event of a discharged battery. But the amperage output in this case would be very, very low.

My recommendation...remove the battery and take it inside where you can connect a trickle charger. NOTE: disconnect the negative terminal first and reconnect it last.

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Old 05-21-2012, 11:23 AM
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C4CRNA
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Whatever Don't close the trunk!!
Old 05-21-2012, 08:20 PM
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street rod
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Can you park near the office where an extension cord might reach to an outlet there?



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