How do you check the voltage on an Ego battery?

Discussion in 'General Vaping Discussion' started by DC2, Sep 19, 2012.

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  1. DC2

    DC2 Tootie Puffer Verified Member ECF Veteran

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    Yes, I'm an idiot, and I haven't got a clue how to do this.
    But at least I'm an idiot with a multimeter.
    :)
     
  2. Papa Lazarou

    Papa Lazarou Ultra Member ECF Veteran

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    You need to press the button to activate the battery, and put the positive probe to the middle of the battery connector, and the negative probe to any bare metal on the body (like the outside of the connector) while simulataneously reading the meter. It can be tricky :p

    Note Joye eGo's have a PWM output so you won't get an accurate voltage reading from them, although the newer "upgrade" versions have a way to switch that off. Not sure about the twists as I don't own one.
     
  3. DC2

    DC2 Tootie Puffer Verified Member ECF Veteran

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    Ah, pressing the button, that's what I was missing!

    So yeah, it is a bit tricky to say the least.
    Would be much easier if I could grow a third hand.
    :)
     
  4. gtbb

    gtbb Super Member Verified Member ECF Veteran

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    Checking a fully charged battery first would give you a good starting point. Then check as it dies down.
     
  5. Papa Lazarou

    Papa Lazarou Ultra Member ECF Veteran

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    A third hand would help yes :)
     
  6. Dunder Mifflin

    Dunder Mifflin Ultra Member Verified Member ECF Veteran

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    You can use an alligator clip. Clip it to the outside for the negative. Then be super duper careful to only touch the center inner post, that will be your positive. DO NOT let the probe touch the sides of the hole while firing the button. BOOM!!!!!!
     
  7. Soulfree

    Soulfree Ultra Member Verified Member ECF Veteran

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    Yeah all bad...
     
  8. OldDragon

    OldDragon Super Member Verified Member ECF Veteran

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    I don't understand the above methods - I have a digital and the best I can do is watch the digits flash by when trying to take a reading. so I need some way to only get the highest reading and have it stay on long enought to read.
     
  9. njay23

    njay23 Super Member Verified Member ECF Veteran

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    Deleted... thought you meant an ego twist not a regular ego
     
  10. Papa Lazarou

    Papa Lazarou Ultra Member ECF Veteran

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    Some multimeters have a "peak hold" mode. On mine it's a small button in the middle of the selector dial.
     
  11. Jetmec

    Jetmec Super Member Verified Member ECF Veteran

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    I cut open an old carto put it on the battery and use alligator clips to connect my leads press the button and you have it.
     
  12. DC2

    DC2 Tootie Puffer Verified Member ECF Veteran

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    Actually, although I said Ego battery, what I have is an Ego Twist.
    The advice I got in the first reply worked just fine though.

    Or at least I think it did.
    :glare:
     
  13. BWhare

    BWhare Super Member Verified Member ECF Veteran

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    I have an idea (a phrase that has always caused co-workers to cringe in terror). If you were to take one of the little plastic plugs out of the end of a carto, stick one probe through the hole in that, and use that one for the center post on the eGo, wouldn't that provide enough insulation barrier to avoid the dreaded "BOOM"? Just stick that end in and use the other probe on the outside ring and it should work. My hands tend to shake at odd moments so I'm not about to risk a battery by using to bare probe ends on a live battery.
     
  14. AttyPops

    AttyPops Yeah, I type stuff. ECF Veteran

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  15. tj99959

    tj99959 ECF Guru ECF Veteran

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    Or make one of these using an old atty/carto
    [​IMG]

    (it will even read the voltage if you reverse the polarity) :unsure:
     
  16. steved5600

    steved5600 Ultra Member Verified Member ECF Veteran

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    Use to be an Electronics tech before I was an Net Eng. Safest way is to take one lead to a Volt meter and put a bit of tape so only the very tip of the probe is exposed then using the probes like chop sticks in one hand put the insulated tip in the hole to the center conductor and holding the other against the outside of the battery. Then use the other hand to push the button. Or get your Vape slave to help. LOL. Check it after charging and then you have a reference point. If you want to go very techi. There is a circuit you can build to check the internal resistance of the battery. When the battery's internal resistance rises that is an indication that the battery is starting to go. You have to know what it was like out of the box to have a reference point. This may be a lot more trouble than it is worth for most. But I'm a tech weenie so i love such stuff.
    If any other DIY's or other nerds are out there here is a diagram of the circuit I'm talking about.
    Commercial/industrial energy efficiency: Electric cell - Internal resistance of battery
     
  17. steved5600

    steved5600 Ultra Member Verified Member ECF Veteran

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  18. steved5600

    steved5600 Ultra Member Verified Member ECF Veteran

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    How did you connect the center lead?
     
  19. tj99959

    tj99959 ECF Guru ECF Veteran

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    Just pulled the guts out of a old atty, then pushed the pos. post out the bottom of the atty. Soldered a wire into the center hole of the post, and pushed it back in.
     
  20. Turbo311

    Turbo311 Full Member

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    To measure voltage on any device using PWM you need a Digital Multimeter that measures True RMS. These are generally not cheep if you serious i suggest getting a quality meter I suggest Fluke meters as that is what i have used for years as a electrician .

    I just tested my ego twist batterys and got a low of 3.23v and a high of 4.94v.
     
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