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Can't find why my battery is draining over night? Its charging at.14.4 volts.new battery.after may be an hour battery reads.12.6volts..next day 12.4 volts.day after.12.2 volts.so there a drain on it some were.was told it could be glow plug relay? Theres a permanent feed to it on the big wire but nothing on the small wire..so don't think its that?.I've pulled the radio out incase it was that but no.also when the battery goes down to 12.2 volts when I go to start it all the dails go backwards then click back normal when van starts???.on a full charge its OK.? Hopping some one can shed some light on this plz..
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Measure battery voltage with engine off, disconnect terminals overnight to eliminate the battery with absolute certainty.
Next day disconnect the battery feed to the alternator in case this is pulling the battery down.
Beyond this try pulling individual fuses one at a time and see what happens.
2007 M59 1.6 HDi
Serieal Berlingo owner
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To measure drain on the battery, you need a dvm set to measure amps. It needs to be connected in series with the vehicles electrical system.
So, disconnect the negative terminal and join the clamp to the positive of the meter, then the negative of the meter goes on the negative battery terminal
The dvm will show current drain. a few mA is normal (you'll notice a bit more if the interior light is on). Stuff like putting the ignition/heated rear window on will make it shoot up.
If you have a high reading with things off, try pulling fuses and seeing which one causes it to drop. This will tell you roughly which circuits are causing a drain and you can go from there
Fire bad, tree pretty
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Took it to a garage the other day he couldn't find any drain.he said its the battery? Its a new one I said.any way went back, got battery changed again but this morning it was reading.12.4 volts so its draining again?? But he checked it all and no drain??.may be it starts to drain a few hours after its been turned off??
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Yeah I thinks intermittent today battery read 12.6.1 volts? Was stood 24 hours.and another day it will read 12.4 volts next day if left 12.2 volts? Maybe just buy a booster pack just in case..its driving me crazy..lol..
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I would fully charge battery AND LEAVE IT DISCONNECTED. After 24 hrs measure the voltage again across the battery. You may have a faulty cell pulling it down. Seen this before on new batteries.
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