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Powering a linear actuator with a battery

Discussion in 'Power Electronics' started by Goldhelmeth, Apr 8, 2020.

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  1. Alec_t

    Alec_t

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    Welcome to EP!
    The battery should be suitable for infrequent use of the actuator.
    Since the actuator draws 3A, theoretically the battery would discharge completely in 2.3/3 hrs = 46 mins. However, it is bad for the battery to discharge it completely, so in practice a run time of 30 mins would be more reasonable. Note that the actuator has a rated duty cycle of 20%.
     
  2. Goldhelmeth

    Goldhelmeth

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    Apr 8, 2020
    thanks a lot I think it will be ok because it will only run 20 sec per hour
     
  3. Bluejets

    Bluejets

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    Oct 5, 2014
    Just be aware the 2.3Ah is a 20 hour discharge rating.
    1C discharging to 9.6v pd is only 1.3Ah.
     
  4. Goldhelmeth

    Goldhelmeth

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    Apr 8, 2020
  5. Alec_t

    Alec_t

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    There is no such thing as a 3Ah motor. You are confusing Amps with Amp-Hrs.
    The 7Ah battery will be fine to power the actuator for much longer than the 2.3Ah one. The actuator will draw just the current it needs, namely 3A.
     
  6. Goldhelmeth

    Goldhelmeth

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    Apr 8, 2020
    I see thank you, im sorry to ask silly questions im not very familiar with electronics... The linear actuator needs 12V DC but all batteries produce DC current am I right ?
     
  7. Goldhelmeth

    Goldhelmeth

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    Apr 8, 2020
  8. Alec_t

    Alec_t

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    All batteries produce DC. The link in post #8 lists several different modules. Make sure you get the 12V module.
     
  9. Goldhelmeth

    Goldhelmeth

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    Apr 8, 2020
    yes of course thanks a lot !
     
    davenn likes this.
  10. Goldhelmeth

    Goldhelmeth

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    Apr 8, 2020
    One last thing, I need to connect the battery to the two screws that are on the bottom of the board right ?
     
  11. Alec_t

    Alec_t

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    Jul 7, 2015
    If you're talking about the 12V relay board in the post #8 link, then it looks like battery positive goes to Vin and battery negative goes to Gnd.
     
  12. hevans1944

    hevans1944 Hop - AC8NS

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    Jun 21, 2012
    Please do not "fork" your thread by posting the same subject twice (or more) using different titles. Moderators, if they catch this, will combine the threads, but why waste their time when you can do it yourself?
     
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