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  1. #1
    RC poster
    Join Date
    Nov 2015
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    19

    Battery Storage?

    Hello all,

    I have two NiMH batter packs, both 8.4v but one is a hump pack with 3000mah and the other is a 7 cell traxxas pack. My question is I charged them up today but was unable to use them to drive the car around today 🙁 Is it ok to leave them charged overnight as I plan to drive tomorrow? They are unplugged and laying on my workbench😀

    Thanks all.

  2. #2
    RC Competitor
    Join Date
    Mar 2015
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    74
    I don't see any problems at all. NiMh's are quite tolerant. And leaving them charged overnight wont harm them.

  3. #3
    RC Turnbuckle Jr.
    Join Date
    Dec 2004
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    PA
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    4,083
    Nimh packs are best stored at full capacity. If after charging the pack sets for a day or more, re-peak it on the charger just before running. After use, allow the pack to cool down, then charge fully and run again or store fully charged.

  4. #4
    RC poster
    Join Date
    Apr 2015
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    4
    I must say Im really confused. This is what is says on the traxxas site :

    "Nickel-Metal Hydride (NiMH) batteries should be fully discharged before charging, and should be stored fully discharged (just use the battery in your R/C vehicle until the battery can no longer move it). "
    https://traxxas.com/support/Traxxas-Battery-Basics

    It doesn't say for how long...what to do if storing for say 6 months?

  5. #5
    RC Turnbuckle Jr. Jimdog's Avatar
    Join Date
    Sep 2011
    Location
    Iowa City, Iowa, USA
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    4,357
    I would listen to jakey. He knows batteries pretty well. I always store my nimh batteries fully charged. And I top them off occasionally.
    This will TOTALLY work, saw a guy on YouTube do it

  6. #6
    RC poster
    Join Date
    Apr 2015
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    4
    That seems to agree with everything else I'm reading. Very strange though that the company that sells the batteries is saying exactly the opposite.

    In any case i was expecting someone would sell a storage/maintenance charger that would automatically cycle on once a week or whatever. All I'm hearing is that I'm supposed to remember to do that manually.

  7. #7
    RC Qualifier jcpede's Avatar
    Join Date
    Dec 2015
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    Just follow the tire marks and broken parts.
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    439
    When my batteries are not in use I leave them fully charged and if not used within a month I top them off again, never had a problem and I still use my stock batteries every now and then.

  8. #8
    RC poster
    Join Date
    May 2016
    Posts
    14
    I came here to ask this very question. I charged my 3000mAh Traxxas branded NiMH battery that came with my Slash 4x4 a few days ago. But is was quite wet and cold for the past few days and I was concerned about leaving it fully charged over many days. I've always been told not to leave a Lipo fully charged for too long. From what I read above, this concern is not the case for NiMH batteries. Good to know.

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