How should I store my battery in the winter?

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  • Updated 3 years ago
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I'm new to EGO and have gone "all in" purchasing the self propelled mower, 16 in chain saw, 15 in string trimmer, and blower. I live in MN so wondering about battery storage over the winter. Do I need to store the batteries indoors or are they ok in the garage where the temps can fall below zero?
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Brent Lindstrom

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Posted 3 years ago

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Blue Angel, Champion

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Hi Brent,

If you check in the battery manual there's a section describing the temps at which the batteries should be stored, as well as the unique Long Term Storage mode of the Ego battery packs.

But, no, if your garage gets below freezing the batteries shouldn't be stored there.  Best to keep them indoors.
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Brent Lindstrom

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That's what I thought. Thank you for confirming.
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Blue Angel, Champion

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No problem!
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Jacob

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Hey. Fellow Minnesotan. I keep mine in the basement all winter.
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Rick Lamers

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RE: MN winter - do you keep the battery ON the charger or just just let sit unplugged all winter? 
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David HD, Champion

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Rick, according to the "battery manual," here are some recommendations on how to store your battery for more than 30 days.  In short, you can leave the battery on the charger but unplug, or on the shelf.

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Jacob

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Thats what i do. Im from mn also.
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Peter Goldman

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I have stored my  battery for 6 months not on the charger over the winter. Then I put it on the charger. It still shows 100% charge, It did not self discharge as the maintenance mode states. What am I doing wrong?
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David HD, Champion

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Hey Peter, you did nothing wrong.  When you store your battery over the winter on the charger itself, then the "discharge" will commence.  However, if you store your battery off of the charger, then the battery will maintain its full charge - or whatever level you store your battery at, because the battery is not making contact with the charger.

Contrary to what the "manual" stated, there is absolutely nothing wrong with your battery maintaining a "full charge" throughout the winter.  The "manual" is not clear about the discharging process having to be on the charger, but I have confirmed this process before with Customer Service.
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Blue Angel, Champion

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David, the battery should discharge on its own regardless of whether it's stored in or out of the charger. From the battery manual, page 12:



All of the discharge electronics are built into the battery endcap, it doesn't rely on the charger. If someone from Customer Service indicated otherwise they were mistaken.

I personally witnessed my batteries in the self-discharge phase. I was initially alarmed when I went to move one and it was warm to the touch near the power button. I forwarded my concerns to Ego and it was confirmed that the batteries would discharge on their own.

Peter, if your battery is not discharging on its own then it is not functioning properly. I would call Customer Service and have it replaced.
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David HD, Champion

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That is what I thought, but like Peter, my batteries never discharged over the winter. I too also stored my batteries off of the charger like Peter and had the same outcome. Which led me to contact CS and was told differently than the manual.
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Jacob

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That's what I understood also. Plus someone stated on here that their battery was warm after it had been store for a while. Because it was discharging
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Blue Angel, Champion

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In my opinion, the manual trumps someone's understanding of the process every time, even if that person has been trained. :-)

After finding two of my batteries warm at the same time I forwarded my concerns and thoughts to Ego, and Jennifer confirmed with Ego's Engineers that indeed the batteries were discharging, on their own, off the charger, as designed. Nothing to worry about.

If batteries are not self discharging they aren't working as designed, unless there's been an Engineering change that has also not been reflected in the manual.

I'd bet that there are some Customer Service personnel who need to be corrected. ;-)
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Peter Goldman

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Interesting! That is certainly the way it should work, although mine did not. I wonder if a change was made since customer service thought my experience was normal.
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Jennifer VandeWater, Community Manager

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All, we're looking into this conflicting information with our engineers and will get back to you soon about the proper storage techniques. Sorry for the delay.

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