Cool off your battery

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I had an experience I would like to share.  Having 2 out of 3 dead batteries that were dead and would not charge  I would try them every few weeks for months and on rare occasions one would decide to charge  Not noticing the fact that they were in an unheated garage  In the winter it could get down in the 30 or 40s   I have tried this twice and it worked both time on two batteries that would not charge for months.  I put them in the refrigerator overnight then put them on the charger and they worked fine.  Let me know if it works for you  Bob
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Bob Page

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Posted 3 months ago

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Oregon Mike, Champion

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Thanks for reporting this, Bob. I've seen others post on here having the same success with this method. 


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William E Hanson

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Thanks for the tip in case I run into this scenario.
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Ken, Champion

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If you're having problems with your batteries not charging under normal conditions, I would contact customer service and get them replaced if they're still within their three-year warranty period.
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Blue Angel, Champion

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^This!
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Bob Page

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These were batteries that were out or warranty.  I was trying to get a little more life out of them.
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Ken, Champion

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That's too bad. Hopefully this works for you. I fly drones and I've heard of drone pilots having similar success reviving their lithium batteries this way, but I don't know how long the effects last. I'll keep my fingers crossed for you!
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szwoopp, Champion

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Is there some kind of heat sensor safety switch that is faulty and being reset by the refrigeration ?
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Ken, Champion

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I'm not sure whether it's that or something to do with the chemistry.
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Bob Page

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This reply was created from a merged topic originally titled Cool off your batter - Update.

I have two batteries a 4 and 2 amp that were out of warranty, along with 2 chargers. Both batteries acted the same way.  I put them on the chargers and the red light would come on first, then switch to green, then yellow, then back to red and would stay on red.  Both were dead for months until I put them in the refrigerator  This has happen on 3 occasions  All 3 times the battery charged after being in the refrigerator over night.  I have a blower and chainsaw, my wife use the blower constantly,  I have not used the chainsaw. Love the EGO product.
Hope this helps someone.