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Need help with using a Multimeter to test for battery drain

doublem_1 Apr 12, 2012

  1. doublem_1

    doublem_1 Member

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    I have aquired a multimeter off of a neighbour so that I can check the amperage of the suspected draw on the battery. I understand I should take the negative terminal off and check between them but really don't know what I am doing, what setting to use etc. Plus, what would be a normal reading because I suspect there would be a small draw on modern cars. Has anyone any experience of doing this? And if so care to share the valuable knowledge :)
     
  2. <tuffty/>

    <tuffty/> Badger 5 Edition...Its all about the flow... Staff Member Moderator Audi S3

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  3. Nick090884

    Nick090884 Member

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    Hi there mate to measure the ampere being used you need to put your meter in line with the pos , if you using a auto range meter its will give use the reading straight away. if your using a meter with manual range start with mili amp. it shouldnt been any higher with the car off.

    hope this helps
     
  4. Markeyboy

    Markeyboy Fan of the R-Tech!

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    also make sure you use the hightst Amp range to start with (some have two), the last thing you wat to do is blow the internal fuse in a borrowed meter lol. once you know the current range you are looking at then drop to the lower setting if it is within range,
     

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