Testing for Knackered battery or a drain

Discussion in 'Mech Tech' started by paulcalf, Apr 5, 2022.

  1. Chuff knows, could be? 11mA on the lower scale, perhaps? :confused:

    Should have bought a Fluke :rolleyes:, definitely.
     
  2. Actually looking at your pictures again you have the leads in the 10A socket so it will only red correctly at the 10a selection. move the red lead over 1 hole.
     
  3. If your thinking is how it works, doesn't the first photo match the hole with the dial? Very confusing human factors.....
     
  4. Yes, the second photo is the one I'm on a bout.

    First photo indicates 110mA

    Sent from my Pixel 6 Pro using Tapatalk
     
    Dicky and F_Pantos like this.
  5. Apologies for any confusion.

    I did say I don't know what I'm doing.

    First photo was me trying to measure amps, so followed the manual and put sensor in the correct hole and set the dial for 10A (20M)

    The manual said something about trying it on a higher setting first, then trying a lower setting, so I switched the dial to 2M and took the second reading/ photo. This was probably pointless.
     
  6. Huyrob

    Huyrob Supporter

    last year I got 2 batteries, one a replacement for the first, both well known makes from a reputable motor factors . Both flat after less than a month. Took them back and replaced no problem. On each 2 of the cells were kaput . They had had virtually no problems previously with the make which was not a cheapo. It’s a sign of the times. I was assured that these were not rebadged units. They shrugged and said perhaps a bad batch. Hey ho.
    Just annoying as I’d wasted hours going through all the drain tests etc . :mad:
     
    cunny44 and paulcalf like this.
  7. Is this on your van or car Paul? If you’re struggling mate with it give me a call. PM me :thumbsup:
     
    paulcalf likes this.
  8. Thanks very much.
    It's the car.

    I think I'm ok, as far as i've worked out I have a normal 'drain' of 0.1Amp (probably from my stereo).
    Car is on charge, then as soon as i can i'll disconnect the battery and monitor the battery voltage.
    If the battery is kanckered i'll try and get them to replace it

    Cheers
     
  9. 100ma drain is more than is generally acceptable. Most manufacturers have a 60ma max for quiescent current drain. However 100ma shouldn’t drain your battery excessively over a few days.
     
    paulcalf likes this.

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