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Hot!battery knackerd or not ?

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davepaul993 PCGB Member
2023/11/20 22:40:09 (permalink)

battery knackerd or not ?

hi my c2 has been a bit of a problem with the battery as to holding its voltage,
its not connected to anything but i do have a ctec, 
i connect it when its down to about 12.0 which from a charge up to 13.0
its down to 12.0 in about 17 days.
is this about right with no use in that time
also its locked up so using all immobiliser and alarm in that time.
your thoughts please.

dave paul
993`s are best
see below porsche pics.

4 Replies

Mark Elder
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Mark Elder PCGB Member
Re: battery knackerd or not ? 2023/11/21 00:42:19 (permalink)
I'd expect mine to be below 12v after sitting for 17 days, so, on this test only, your battery is probably fine.
But why not just leave it on your CTEK? - they are designed to stay connected.  They don't just charge, they exercise your battery.

Mark Elder
993C4 Manual Coupe, Black/Black, 1996P, 74K of her 101K miles in my hands.
Best drives: CL627 in the Spanish Picos, A82 Loch Lomond to Glencoe
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Motorhead PCGB Member
Re: battery knackerd or not ? 2023/11/21 09:37:17 (permalink)
I agree with Mark that it would be sensible - and perfectly safe - to leave the battery connected permanently to your CTEK Dave.
Any battery supplier will be able to run a check on your battery’s condition, usually FOC.

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North Beds (R10 & R24)
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Greenman986S PCGB Member
Re: battery knackerd or not ? 2023/11/21 09:56:22 (permalink)
As above - leave the CTEK attached. It is what it is designed for
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nickgardner PCGB Member
Re: battery knackerd or not ? 2023/11/22 11:06:07 (permalink)
Have a look at Bergville FX website - there is a detailed technical article on the topic

Nick Gardner
993 4S
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