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Thread: Flat Battery Question

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    Question Flat Battery Question

    Hi,

    I had not driven my car for a couple of week, then when I tried to start it, it wouldn't start. The engine appeared to turn over a bit but didn't start.

    So I tried to get jump leads on from another car. But it seems to drain the battery and no its completly dead.

    When the jump leads were connected it still wouldn't start or get any charge.

    Does this mean the battery is dead, or some other problem?

    Thanks
    Richard

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    Regular Member dv8's Avatar
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    Rich

    take the battery off, give it a charge... if you can longer the better, if you have a voltmeter/multimeter, turn off the charger, then check the voltage after 2-3 hours, it should be over 12v, let it stand for about 10-15mins, whilst watching the voltage if it drops and hold just over 12v it might be ok, if not and keep slowly falling it may need replacing.
    Assuming it holding its voltage, then charge over night, but keep an eye on it, just in case. refit and start the car, then with the same mulitmeter, check the charging voltage around 13.8v if its close to this then your alternator appears ok. If its lower this may be a fault with the alternator. hence the flat battery, i often leave my vec for a week or so and never had a porblem starting, but whenit i used it does go on a long run..
    maybe worth investing in a CTEK charger from Halfrauds if left for long periods idle.
    If you need anything else..PM ill get back.

    DV

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    Regular Member mark1319's Avatar
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    Default

    How long did you leave it between connecting the leads and trying to start it? Sometimes if the battery is really suffering it'll need a few mins to have enough juice to turn it over.

    My battery is suffering ATM so the booster pack is getting worked overtime and I need a new battery ASAP.

    May be that the battery is completely goosed, but I'd try getting a jump again, but leave it for 5 mins before trying to start it.

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    Forum Moderator John LE's Avatar
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    Was the engine running on the jumpstart car?

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    yes engine was running on starter car. had it running for a good 5 mins.

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    Regular Member hoochydady's Avatar
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    as said charge the battery for a few hours and try agian i have came across cars with battery that fubard they just wouldnt start on a jump what size jumpleads are you using? i have also had jumpleads that thin they have started smoking when trying to jump start a car to long i now own very thick jumpleads just incase if your going to try jumpstarting it agian leave the car runining for 5-10 mins then try to start the 1 with the flat battery

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    Default

    would a trickle charger work to charge it?

    http://www.valuemedia.co.uk/popprods.htm?Product=SWTBC

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