How long can I store 18650 batteries

Discussion in 'Battery Junkies / Chargers' started by joeyboy, Sep 12, 2018.

  1. joeyboy

    joeyboy Gold Contributor Member For 3 Years

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    I quit vaping but kept all my stuff. I got rid of my bad batteries. How long can I store my others? Can they just self ignite if they get too low? They are in plastic cases. I have 18650s and 26650s.

    Thanks.
     
  2. Syythe

    Syythe New Member ECF Refugee

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    Storing at low temperatures, ideally around 40ºF, at about half charge is recommended, or around 3.6-3.7v. Heat is the worst thing for the battery. Also, they loose roughly 10% of its charge per month, so recharging them up to half every 3 or 4 months would be a good idea. They can last for a few years under these conditions.
     
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  3. SteveS45

    SteveS45 Diamond Contributor Member For 2 Years ECF Refugee

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    I read charging batteries during storage is also a good idea along with what @Syythe posted.
     
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  4. OhmzRaw

    OhmzRaw Silver Contributor Member For 2 Years

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    @Syythe is correct. You always want to make sure that the battery has at least 50% or more charge. Over time, the battery will deplete even when not in use. I tested this out with one of my batteries.
     
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  5. joeyboy

    joeyboy Gold Contributor Member For 3 Years

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    Thanks. They were all 100% 2 months back. I will recharge routinely.
     
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  6. SteveS45

    SteveS45 Diamond Contributor Member For 2 Years ECF Refugee

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    At least wait until they deplete to near what Syythe posted. It was what I read about storing batteries and not necessarily for vaping. Good Luck my friend
     
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  7. Syythe

    Syythe New Member ECF Refugee

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    Storing at 100% charge is actually bad for the battery, it can shorten the life of the cell quite a bit. This is why new batteries come charged at 50% or less.
     
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  8. joeyboy

    joeyboy Gold Contributor Member For 3 Years

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    No, I had not vaped in months and needed to check my batteries. I knew I had some that were in bad shape and had to get tossed in recycle. Most were paired sets. In doing this, they got charged. Now, they wont be recharged until they drop down enough.

    I have them in their pairs and new singles for the ones that had bad mates.
     
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  9. BoomStick

    BoomStick Gold Contributor Member For 3 Years

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    Don’t store too high or low. Under 50% isn’t good. Nominal voltage is best. 3.7v.
     

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