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Battery draining, continuity question

Old 17 November 2018, 08:45 PM
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TheAngryFerret
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Default Battery draining, continuity question

My mate has got a classic and his battery drains fully over night, recently had issues with not starting and turned out to be a broken wire. Now i was thinking that the drain on the battery could be similar. I disconnected the battery and in my basic logical thinking thatif i got continuity between a live wire and the body then that would surely be it.
But it all seems to obvious as if i check the main live from the battery and the main earth lead with them not connected i get a circuit. Is it that obvious or am i missing something??
Thanks for any help
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Old 19 November 2018, 08:48 PM
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dark_angel
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This there a light on somewhere - either inside the car or on the boot ? Or even if the parking lights are on ?

Many moons ago I used to have a mk 2 Nissan micra 1.2 GS and being younger and more stupid than I am now I used to forget to turn off the boot light after use.

Just a thought.

Andrew.
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Old 20 November 2018, 09:01 AM
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Thanks for the reply, as far as im aware everything is swithed off. But i'll go through it all agina when i pop up his next time.
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Old 20 November 2018, 10:58 AM
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Don Clark
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Has the car got an alarm fitted?
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Old 20 November 2018, 11:51 AM
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Originally Posted by Don Clark View Post
Has the car got an alarm fitted?
Or Tracker?
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Old 26 November 2018, 08:09 PM
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Does have alarm and imobiliser fitted but has been removed once to see if it was that.
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Old 26 November 2018, 08:33 PM
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alcazar
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If you have a multimter, set it to DC current. remove battery +ve and place multimeter in series, respecting polarity.

DO NOT SWITCH ANYTHING ON, OR START ENGINE.

Report on multimeter reading please, with EVERYTHING switched off.
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Old 26 November 2018, 09:12 PM
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Originally Posted by alcazar View Post
If you have a multimter, set it to DC current. remove battery +ve and place multimeter in series, respecting polarity.

DO NOT SWITCH ANYTHING ON, OR START ENGINE.

Report on multimeter reading please, with EVERYTHING switched off.
The battery itself is 11.8 volts at the moment and connected in series it was reading 11.8. So does that mean something is pulling power now?
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Old 26 November 2018, 09:45 PM
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Set the multimeter to dc amps not volts and see if there is a current draw, connected as described above.

As stated do not start anything!

Chris.

Last edited by Chrisp11981; 26 November 2018 at 09:46 PM. Reason: Change
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Old 27 November 2018, 09:18 AM
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alcazar
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Errrr, you do know the difference between Amps and Volts?

if not, get it to a DECENT auto electrician...www.yell.com will help you find one.
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Old 02 December 2018, 09:35 PM
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Originally Posted by alcazar View Post
Errrr, you do know the difference between Amps and Volts?

if not, get it to a DECENT auto electrician...www.yell.com will help you find one.
There's no fun in doing that though.
Also it shows 0.
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Old 03 December 2018, 09:59 AM
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So almost certainly a duff battery. Probably dropped a cell and can't hold charge.

A DECENT auto electrics place, (ie: NOT Halfords or Kwik Fit) will check battery.
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Old 03 December 2018, 10:51 AM
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Originally Posted by alcazar View Post
So almost certainly a duff battery. Probably dropped a cell and can't hold charge.

A DECENT auto electrics place, (ie: NOT Halfords or Kwik Fit) will check battery.
Hes tried 2 batteries, knowing his luck they will both be ****ed. After realising last night that the 0 reading meant there was no drain on it i think he's going to sort another battery out today to try. Cheers mate.
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