I have read on this great forum about battery temp storage. I seem to be seeing two different max temps. 85 and 104 degrees Fahrenheit. I am hoping to store the batteries in my garage over the summer and it most likely will be somewhere between these two temps but def not over 104. Is this ok?
Posted 1 year ago
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2,072 Points
Be prepared to lose up to 35% of storage capacity permanently in a year at that temperature.
Bottom line, store cool and never at 100%. 40% is ideal for storage.
To extend battery life, i suggest not charging after finishing with tools. Charge up the day you plan to use the tool. Lithium batteries do not like being at 100%.
Bottom line, store cool and never at 100%. 40% is ideal for storage.
To extend battery life, i suggest not charging after finishing with tools. Charge up the day you plan to use the tool. Lithium batteries do not like being at 100%.
(Edited)
Amber F., Official EGO Rep
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67,908 Points
Hi there. I have a related question: is it OK to keep the battery charger in the garage during the summer or should I bring that inside as well as the batteries? I live in Phoenix so summer temps are well over 100 every day. Thanks. Gary
szwoopp, Champion
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91,046 Points
yes inside would be a better location for charging and storage due to the high temperature
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220 Points
Any issue with storing/charging in a heated garage (50 degrees F) during the winter???
Or summer, rarely gets above 75 in the same garage???
Also, Having to remember to plug in your batteries each time you want to use them is a massive PITA. Please develop a system where the batteries can be stored at 80% which is usually fine. Perhaps the charger has one setting for full, one for 80, so we could leave batteries on the charger at 80%. Something other than this system please.
Or summer, rarely gets above 75 in the same garage???
Also, Having to remember to plug in your batteries each time you want to use them is a massive PITA. Please develop a system where the batteries can be stored at 80% which is usually fine. Perhaps the charger has one setting for full, one for 80, so we could leave batteries on the charger at 80%. Something other than this system please.
Blue Angel, Champion
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178,394 Points
50-75 is fine for storage and charging. If charging before use is not convenient, just charge the batteries after using them and they’ll be ready to go.
Ego’s chargers are pretty fast, so I usually just charge before use.
Ego’s chargers are pretty fast, so I usually just charge before use.
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220 Points
well this comment above scares me "ottom line, store cool and never at 100%. 40% is ideal for storage.
To extend battery life, i suggest not charging after finishing with tools. Charge up the day you plan to use the tool. Lithium batteries do not like being at 100%. " Just wondering how bad it is to store them at 100%
To extend battery life, i suggest not charging after finishing with tools. Charge up the day you plan to use the tool. Lithium batteries do not like being at 100%. " Just wondering how bad it is to store them at 100%
Blue Angel, Champion
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178,394 Points
Ego doesn’t charge their cells as high as other companies do, which is likely their way of protecting against this issue. Check out this video, it shows Echo charging their cells to a higher voltage than Ego:
https://youtu.be/lRdBS9oFUXc
Ego has done a very impressive job of designing a durable and robust battery system.
https://youtu.be/lRdBS9oFUXc
Ego has done a very impressive job of designing a durable and robust battery system.
Ken, Champion
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68,068 Points
A "massive PITA," really? A bigger PITA than making sure you remembered to go to the gas station to fill the gas can?
I tend to not return my batteries to the charger after use and charge them the night before I'm going to use them. It's just part of managing lithium batteries. It's the same for my camera equipment and drone batteries.
I love the fact that if I do forget to charge them in advance, the rapid charger can charge the 5.0 Ah battery in about 20 minutes from its partial charge.
I tend to not return my batteries to the charger after use and charge them the night before I'm going to use them. It's just part of managing lithium batteries. It's the same for my camera equipment and drone batteries.
I love the fact that if I do forget to charge them in advance, the rapid charger can charge the 5.0 Ah battery in about 20 minutes from its partial charge.
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220 Points
Yeah, it is a PITA. maybe not massive :) I dont always mow at predictable times.. I have young kids.. A lot of times its "ok, kids are not bothering me, GO MOW MOW MOW" or I just decide randomly its time to mow quick before a storm. So yeah, charging day of or right before isnt very convenient at all. Now if someone where to tell me instead of 5 years of life you may only get 4 by abusing them and keeping them on the charger, I would sacrifice that year for convenience. If they said 5 years becomes 2 years, I would likely not haha.
Ken, Champion
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68,068 Points
Well, the batteries do have three-year warranties, if that helps you to decide to live life on the edge!
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682 Points
Also, Ego batteries self-discharge to ~35% after 30 days of no use, which also adds to their longevity.
In the summer, I almost always charge after using, because I will inevitably have to use them in a week or maybe two. In the fall and winter, I charge them up after the last mow/leaf mulch and let the 30 day timer kick the battery back down to storage voltage automatically. When its time to clear the snow off the driveway, I charge them up just prior to snowblowing so that they're warm enough to deliver the proper current.
My only complaint is there doesn't seem to be a way to manually initiate the self-discharge function...
In the summer, I almost always charge after using, because I will inevitably have to use them in a week or maybe two. In the fall and winter, I charge them up after the last mow/leaf mulch and let the 30 day timer kick the battery back down to storage voltage automatically. When its time to clear the snow off the driveway, I charge them up just prior to snowblowing so that they're warm enough to deliver the proper current.
My only complaint is there doesn't seem to be a way to manually initiate the self-discharge function...
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220 Points
brinox.. great info.. thank you.. didnt know they auto discharged... I tend to leave batteries on the charger full time, but ill try to remove them after they are done charging to start that timer. thanks
Blue Angel, Champion
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178,394 Points
Ego batteries will self discharge after 30 days even if they’re sitting in the charger. The discharge circuit is in the battery and operates regardless of where the battery is located.
The charger will stop charging the battery once it’s done and doesn’t try to continually top it up. In fact, the battery needs to have significant use before the charger will attempt to charge it again. If you fully charge a battery and only use it for a few minutes, the charger will refuse to top it up. It needs a certain amount of discharge before the charger will start charging it again.
The charger will stop charging the battery once it’s done and doesn’t try to continually top it up. In fact, the battery needs to have significant use before the charger will attempt to charge it again. If you fully charge a battery and only use it for a few minutes, the charger will refuse to top it up. It needs a certain amount of discharge before the charger will start charging it again.
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220 Points
Thanks... so if i charge to full and leave it on the charger will it discharge after 30 days to 30% or whatever its low watermark is before kicking in to charge again? or will it drop to the level at which it would start charging again, say 80%? just curious. thanks again guys.. very helpful
Blue Angel, Champion
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178,394 Points
It will drop to 30% and stay that way. If you want to charge, just pull it off and re-insert and it will charge back up.
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220 Points
Awesome.. thank you sir.
Blue Angel, Champion
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178,394 Points
Any time!
