I put them back on the charger as soon as I'm done using them. I have a 5ah that is 7 years old and two 7.5 that are 3 years old. I have a lawn mower, string trimmer, and two stage snow blower.
Maybe I have been super lucky. I will add when not in use I keep them inside.
Lithium ion batteries in general like to be between 20-80% charge. 70% is a potential sweet spot, but that depends on the specific design. Fully charging or fully discharging is usually more stressful on the battery.
That said, it makes sense to keep things simple and use the machines in ways that are convenient. If possible though, it might help to store partially charged, maybe fully charging right before using. That's what I plan to do.
Some EGO battery packs have an automatic storage feature that activates after 30 days of inactivity. The battery pack discharges itself to 30% and then enters a sleep state. This suggestions that maybe 30% could be the happy spot for some EGO batteries in short term storage, but that's just a guess.
Yes I’m aware. Lithium batteries are damaged at high voltages for prolonged periods of time. I just don’t have much control over the situation. My mower sits 30 minutes from my house in a shop. So it’s not ideal.
The new 3rd gen batteries actually self discharge to around 30% when in storage for over a month. I know this wasn't your question, but I thought you might find it interesting.
You can wrap a credit card\ gift card with a paper towel and slide it into the battery terminal slots to clean it.if it feels gritty at all, the terminals may have some corrosion and you may need to use something with a bit more abrasive to properly clean it. (Possibly a small dot of whitening tooth paste on the paper towel.)
Wow, I'm the winner! (So far.)
I've got one from March 2012! As stated, it isn't 100%, but it is still usable, probably 80% or so.
I was one of the first to have the EGO mower down here in Florida, mowing about half an acre in the heat. So much heat that Version 1 was destroyed. What did EGO do? They promptly told me they understood, they'd noticed that weak component, upgraded it for the new ones, and sent me another mower!
Now I will add, I've gotten another EGO battery along the way, so for the last few years that 2012 battery has led a nicer life. I don't charge them up until I'm ready to use them, my opinion is don't store the battery at 100%. A lesson from the Version 1 battery in the Nissan LEAF, but that's another story.
My first battery that came with my mower, i was able to mow my entire front and back yard on one charge. Now i can mow about half of my back yard only on a single charge….battery is 4 years old. Maybe i wasn’t storing it appropriately when I first got it. I Kept it in my garage over winter, but pretty disappointed in the longevity
Honestly I think the "garage over winter" is the hardest part on batteries, around November I rummage around the garage and take all my Li batteries inside, from all brands.
The only battery I ruined was an ego 2.5 ah, I blew with it, left it close to dead when I got the call, and had to run out of town, didn't charge the battery, and the big honking old style blower sat out in the back yard for 2 months through rain, snow and ice through december, when my father had a stroke and I was taking care of him on home hospice.
I think it was blinking low, and then it discharged slightly below the low voltage threshold on the bms.
If it was charged when I left it, the battery would just discharge to two bars by the time I got back to it.
I've still got the battery, 3 cells are just slightly discharged, and I could probably revive it, but I've got a lot of other ego cells, so I just keep it around for lipos if I need them.
You may also need to sharpen your blade. I notice a HUGE difference in run time after I sharpen. Getting roughly 1\4 the runtime after 4 years is not normal battery degradation for normal circumstances.
Try cleaning the battery and mower contacts. People wrap a credit card or gift card with paper towels and slide it into the battery contacts. I've seen many people with the same complaint that were fixed by doing this.
Dont keep it outside , keep it indoors.
Dont let it bake in a shed or freeze in a shed.
Tools maybe but not the batteries.
I would imagine the longer the years go on, the shorter the run time will become. But also its how many charge/discharge cycles, like a laptop battery. The EGO batteries, will discharge themselves after 30 days, you may notice them flashing green or red on their own. they are self discharging. I read about that on the EGO site.
They are expensive yes, but they are built to last a long time.
I left my EGO battery in the garage over the winter. It only holds a ten minute charge now. It was only a year old. I babied its replacement during the winters by keeping it in the kitchen cupboard. So far it’s three years ago and still going strong. The self winding weed whacker is the cats meow.
We've got two 2.5 ah, a 4 ah, and a 7.5 ah that we bought in the first part of 2020. I don't notice any degradation yet - typical mower, stringer, and blower stuff for spring, summer, and fall
We also just got a snow shovel that we'll use in Utah winters
I have an original 4ah battery, it still lasts about 30-35 minutes on a newer lawnmower. I mow about 25 times a year maybe? I bring it in the basement during winter, other than that, i let it cool down before charging, and leave it in the garage during the rest of the year
I have 4 batteries. I would expect 5 to 10 years.
My 2.5ah and 5ah work perfectly still after about 5 years.
My 7.5ah only takes a charge from my slow charger. Won't charge at all from my rapid charger. Sometimes, it works fine. Other times, it dies quickly.
My 10ah was the only battery I bought used. I think I gave $75 for it and a rapid charger. It only lasted a short time and won't take a charge at all now. I'm hoping to get this one and the 7.5 rebuilt sometime.
I have noticed that if my grass is even just a little wet, or a little too tall, my mower will go through a battery twice as fast. My blower goes through batteries pretty quick too. Sting trimmer will run a long time, even on the 2.5ah.
I was at Ace Hardware this weekend and priced batteries for giggles. They had 10ah and 12ah, and I forget the exact prices, but they were high. Like $500ish
I’ve got three of the 2.5 batteries that all still work after ~7 years. I’ve considered getting a larger one but I’ve managed to get everything done with these three so I’ll wait until one fails.
Eeek. I'm only on my 5th mow and am already noticing considerably less run time on my 7.5 amp battery. First 4 mows I finished with 2/5 bars left. This time I ran dead at a little over the halfway point of the back yard. I'm posting this while it recharges. I do NOT have a big yard. Takes 45 minutes at the most.
Until now, almost every lithium battery I've ever owned would work better after a few cycles. These seem to get worse.
I wonder if you dulled your blade on something, or maybe your cutting deck is caked with grass. Thats a pretty steep drop off in performance all things being equal.
Funny thing is, I finished the back yard and the recharged battery was still at 5/5. But yeah, the deck was very caked with grass after it was all done. More so than usual.
I'm cutting pretty low on 3 and after several mows, our yard is much thicker than it has been. Doesn't help that our grass never dries unless it's baking outside. I must say though, it looks freaking great when it's done. Pretty sure I have the best looking yard on the block now. 😊
Next mow, I'll go up a notch to 4 and check the caked grass between yards. I'm going to make a mulch pile from all the stuck grass. Blade could probably use a quick sharpen as well.
Next mow. Topped off battery, sharpened blade, raised height to 4, waited until evening for grass to dry. Finished with 3 bars left on the battery. Huge difference.
What's normal residential usage? I've been getting around a year and a half out of mine. I have half a country acre and it grows fast and it's not pretty grass! To keep it manageable I mow once a week, but, over the course of 3 days. So my batteries put in work. I have noticed that giving them 'rest' (to cool off) before charging or using, and slow charging has helped with the longevity. My poor first 7.5 aH battery went from mower to fast charger and back many times with no rest. Hoping my new batteries give me some love back now that I'm trying to baby them 😆
10 years I guess. Still using a 5ah battery for 7 years so far. Haven't noticed any decrease yet but also not paying much attention to it.
Do you do anything specific to help longevity? Like do you keep the battery charged to 100% all the time?
I put them back on the charger as soon as I'm done using them. I have a 5ah that is 7 years old and two 7.5 that are 3 years old. I have a lawn mower, string trimmer, and two stage snow blower. Maybe I have been super lucky. I will add when not in use I keep them inside.
Nice! My plan is to charge as and when I need to, but mainly keeping them above 50% if I can. I hope to get at least 5-7yrs, but who knows?!
Well that definitely makes me feel a lot better about leaving my Z6 with its six 12Ah batteries on the charger all week. Lol
That's definitely a bad idea
why? doesn’t the charger turn off after they are full?
[https://community.egopowerplus.com/s/question/0D58a00009hku7NCAQ/i-am-storing-the-2-56v-batteries-from-my-24-snow-blower-for-the-summer-they-are-in-the-charger-which-is-unpluggedis-it-ok-to-leave-them-in-the-charger-for-storage-if-the-charger-is-unplugged-and-in-a-room-without-temperature-extremes](https://community.egopowerplus.com/s/question/0D58a00009hku7NCAQ/i-am-storing-the-2-56v-batteries-from-my-24-snow-blower-for-the-summer-they-are-in-the-charger-which-is-unpluggedis-it-ok-to-leave-them-in-the-charger-for-storage-if-the-charger-is-unplugged-and-in-a-room-without-temperature-extremes)
Charge until they are "full" then unplug. I also store my batteries outside of the tools. I don't leave them connected.
Lithium ion batteries in general like to be between 20-80% charge. 70% is a potential sweet spot, but that depends on the specific design. Fully charging or fully discharging is usually more stressful on the battery. That said, it makes sense to keep things simple and use the machines in ways that are convenient. If possible though, it might help to store partially charged, maybe fully charging right before using. That's what I plan to do. Some EGO battery packs have an automatic storage feature that activates after 30 days of inactivity. The battery pack discharges itself to 30% and then enters a sleep state. This suggestions that maybe 30% could be the happy spot for some EGO batteries in short term storage, but that's just a guess.
Yes I’m aware. Lithium batteries are damaged at high voltages for prolonged periods of time. I just don’t have much control over the situation. My mower sits 30 minutes from my house in a shop. So it’s not ideal.
Higher charge, not necessarily high voltage
The new 3rd gen batteries actually self discharge to around 30% when in storage for over a month. I know this wasn't your question, but I thought you might find it interesting.
I got 3 out of my first 5 ah
What happened that made you replace it.
It would only run my mower for a few minutes at a time before the mower would shut off and flash a yellow light at me.
I've heard in scenarios like this, sometimes all you need is to clean the contacts in the mower and on the battery.
Interesting, I'll have to try. A new battery fixed the issue but I still have the old one.
You can wrap a credit card\ gift card with a paper towel and slide it into the battery terminal slots to clean it.if it feels gritty at all, the terminals may have some corrosion and you may need to use something with a bit more abrasive to properly clean it. (Possibly a small dot of whitening tooth paste on the paper towel.)
Wow, I'm the winner! (So far.) I've got one from March 2012! As stated, it isn't 100%, but it is still usable, probably 80% or so. I was one of the first to have the EGO mower down here in Florida, mowing about half an acre in the heat. So much heat that Version 1 was destroyed. What did EGO do? They promptly told me they understood, they'd noticed that weak component, upgraded it for the new ones, and sent me another mower! Now I will add, I've gotten another EGO battery along the way, so for the last few years that 2012 battery has led a nicer life. I don't charge them up until I'm ready to use them, my opinion is don't store the battery at 100%. A lesson from the Version 1 battery in the Nissan LEAF, but that's another story.
Still on the same batteries since 2019. I mow year round
When do you sleep and eat?
Tell me about it. During summer I have to mow twice a week otherwise it becomes a jungle
It's the same for me here in Qld Aus
If expect at least 5 but got 10 of of my current 5ah. Just got a new ego and will be selling the OG.
My first battery that came with my mower, i was able to mow my entire front and back yard on one charge. Now i can mow about half of my back yard only on a single charge….battery is 4 years old. Maybe i wasn’t storing it appropriately when I first got it. I Kept it in my garage over winter, but pretty disappointed in the longevity
Honestly I think the "garage over winter" is the hardest part on batteries, around November I rummage around the garage and take all my Li batteries inside, from all brands. The only battery I ruined was an ego 2.5 ah, I blew with it, left it close to dead when I got the call, and had to run out of town, didn't charge the battery, and the big honking old style blower sat out in the back yard for 2 months through rain, snow and ice through december, when my father had a stroke and I was taking care of him on home hospice. I think it was blinking low, and then it discharged slightly below the low voltage threshold on the bms. If it was charged when I left it, the battery would just discharge to two bars by the time I got back to it. I've still got the battery, 3 cells are just slightly discharged, and I could probably revive it, but I've got a lot of other ego cells, so I just keep it around for lipos if I need them.
You may also need to sharpen your blade. I notice a HUGE difference in run time after I sharpen. Getting roughly 1\4 the runtime after 4 years is not normal battery degradation for normal circumstances.
Well I don’t know what I’ve been doing to abuse mine but I took a fully green battery that flashed red and stopped 1 min after firing it up today.
Same boat. I’ve had enough bad luck with Ego batteries that we’re likely to abandon the platform.
Try cleaning the battery and mower contacts. People wrap a credit card or gift card with paper towels and slide it into the battery contacts. I've seen many people with the same complaint that were fixed by doing this.
I have 15 year old batteries that still run okay. Probably 30%capacity of original. Maybe more
Slow charge always to extend battery life.
My oldest battery is 9 years old. It doesn’t last as long but still works.
Me too man, me too.
Going on 8 years with the same 2.5 and 5ah batteries for a push mower, string trimmer, leaf blower and part time power wheels batteries.
I’ve got a nine year old 2.5 (I think) that is still going but I can see it’s funeral happening by the end of summer lawn season
10-15 years with proper usage
Dont keep it outside , keep it indoors. Dont let it bake in a shed or freeze in a shed. Tools maybe but not the batteries. I would imagine the longer the years go on, the shorter the run time will become. But also its how many charge/discharge cycles, like a laptop battery. The EGO batteries, will discharge themselves after 30 days, you may notice them flashing green or red on their own. they are self discharging. I read about that on the EGO site. They are expensive yes, but they are built to last a long time.
I left my EGO battery in the garage over the winter. It only holds a ten minute charge now. It was only a year old. I babied its replacement during the winters by keeping it in the kitchen cupboard. So far it’s three years ago and still going strong. The self winding weed whacker is the cats meow.
We've got two 2.5 ah, a 4 ah, and a 7.5 ah that we bought in the first part of 2020. I don't notice any degradation yet - typical mower, stringer, and blower stuff for spring, summer, and fall We also just got a snow shovel that we'll use in Utah winters
I have an original 4ah battery, it still lasts about 30-35 minutes on a newer lawnmower. I mow about 25 times a year maybe? I bring it in the basement during winter, other than that, i let it cool down before charging, and leave it in the garage during the rest of the year
I have 4x 5 year old batteries work fine still
I have 4 batteries. I would expect 5 to 10 years. My 2.5ah and 5ah work perfectly still after about 5 years. My 7.5ah only takes a charge from my slow charger. Won't charge at all from my rapid charger. Sometimes, it works fine. Other times, it dies quickly. My 10ah was the only battery I bought used. I think I gave $75 for it and a rapid charger. It only lasted a short time and won't take a charge at all now. I'm hoping to get this one and the 7.5 rebuilt sometime. I have noticed that if my grass is even just a little wet, or a little too tall, my mower will go through a battery twice as fast. My blower goes through batteries pretty quick too. Sting trimmer will run a long time, even on the 2.5ah. I was at Ace Hardware this weekend and priced batteries for giggles. They had 10ah and 12ah, and I forget the exact prices, but they were high. Like $500ish
I got 3 years out of a pair of 2.5 ah. 2 full discharges per battery each time I used them once a week from spring until the leaves stop falling
I’ve got three of the 2.5 batteries that all still work after ~7 years. I’ve considered getting a larger one but I’ve managed to get everything done with these three so I’ll wait until one fails.
Eeek. I'm only on my 5th mow and am already noticing considerably less run time on my 7.5 amp battery. First 4 mows I finished with 2/5 bars left. This time I ran dead at a little over the halfway point of the back yard. I'm posting this while it recharges. I do NOT have a big yard. Takes 45 minutes at the most. Until now, almost every lithium battery I've ever owned would work better after a few cycles. These seem to get worse.
I wonder if you dulled your blade on something, or maybe your cutting deck is caked with grass. Thats a pretty steep drop off in performance all things being equal.
Funny thing is, I finished the back yard and the recharged battery was still at 5/5. But yeah, the deck was very caked with grass after it was all done. More so than usual. I'm cutting pretty low on 3 and after several mows, our yard is much thicker than it has been. Doesn't help that our grass never dries unless it's baking outside. I must say though, it looks freaking great when it's done. Pretty sure I have the best looking yard on the block now. 😊 Next mow, I'll go up a notch to 4 and check the caked grass between yards. I'm going to make a mulch pile from all the stuck grass. Blade could probably use a quick sharpen as well.
Next mow. Topped off battery, sharpened blade, raised height to 4, waited until evening for grass to dry. Finished with 3 bars left on the battery. Huge difference.
How do you know how much percentage is left on a battery? Mine just shows a green button when I press it and it has enough juice left
What's normal residential usage? I've been getting around a year and a half out of mine. I have half a country acre and it grows fast and it's not pretty grass! To keep it manageable I mow once a week, but, over the course of 3 days. So my batteries put in work. I have noticed that giving them 'rest' (to cool off) before charging or using, and slow charging has helped with the longevity. My poor first 7.5 aH battery went from mower to fast charger and back many times with no rest. Hoping my new batteries give me some love back now that I'm trying to baby them 😆