EGO Battery Info: How To Estimate When You Will Need To Replace The Battery & More!

Found this video today JUST as mine JUST died, both the 4Ah from the original mower and the 2Ah from the original trimmer, both more or less died this season. I purchased these spring of 2014. I also left them on the charger unless in use, and always did an 80pct charge before winterizing in a room temp box. So 8 years is not bad, AND the good for me was they died fast, last season I still could do the entire yard. Not to bad for me. This was mowing 2x a week from April - Oct at 5000ft elevation on a corner lot.

No, a charge cycle is empty to full. A half charge is half a cycle. It's also best to charge before storage, because they have circuitry to deplete the battery after approx 30 days of inactivity. They will automatically deplete to the proper storage level. If you let them sit (30days), you'll see the "orange light" come on, and they'll start generating heat. This is storage mode.

Thanks for lots of good info. I had been leaving my 3 ego batteries (7.5, 5.0 & 2.5) in the chargers because I thought they shut down after charging and went into slow discharge state. I won't anymore.

Far more important to not let batteries get 100% discharged. Charge before they blink red. And keep away from heat and store in cool area at partial charge. Cycles are unlikely to kill these batteries, but heat can in just a few hours.

I have both chargers. But I am sure that the slow charger is less stressful and will make your batteries last longer. So I don't use the fast charger. In fact, my 7.5AH is getting old and will not charge properly on the fast charger. But charge and works fine on the slow charger.

If you charge the battery once a week during the mowing season (9 months ) that would be 36 times per year 800 divided by 36 equals 22 years . Good luck with that .

Awesome video thank you

I for got to tell you that I have only had my plower for about 1 year or a little more. Thanks Don

Thanks very helpful

I have a 2.5 battery(5 years old) and another 4 years old. I have the small charger. I use them alternately 10 minutes a day on the Leaf Blower (4-5 days a week). They both still run strong but I'm planning to replace both within 6 months. =)

Thanks for posting

I bought my ego mower back in 2014 and bought another battery to go with it. The battery that came with the mower still runs the mower for about 30 minutes. The stand alone battery I bought was junk from the beginning and only runs the mower for about 5 minutes. This will be my 9th year using the mower. They are both 4 amp hour batteries. I just bought a 5 amp hour after market battery. I hope I will have good luck with it.

5ah battery lasted almost 6 years.... now I have to sell a kidney.

I absolutely love the equipment and everything about the tool but the 2.5 Ah battery only last me 20 minutes of hard use. I just got it yesterday. I regret not upgrading to the 5 ah 18" bar.

I have had my batteries for 8 years and they all hold a charge like new, at least no noticeable change. I stored them on the chargers 100% of the time, like one of the owners manual said, even when stored for 3-4 months. It would drain after 30 days to ~30%, so I will recharge before using.

Thank you for this video. Since you have experience with the charging of these batteries, I would like to ask for advice on how to solve a problem I have with my EGO Battery pack that the manual does not address. I have a new EGO 56V 2.5AH Battery Pack, bought two months ago with an EGO lawn trimmer. After the trimming was done on the lawn (September 20, 2022), I fully charged it and set it aside. So far, so good. The EGO Battery manual says that it is supposed to go to 30% after a month in storage, but as of November 5 , 2022 (well over a month), it still shows all 5 lines of FULL charge. It appears the BMS is not working to lower the battery pack to 30%. Is this battery defective? I read that at 80% or more charge, Lithium batteries lose 20% per year of capacity. I don't want to lose 20% a year. Just running the Battery Pack on the trimmer to force it down to 30% is NOT what the manual says I am supposed to do. What should I do?

Great info

This may not be the same battery. But my 5.0 amp hour doesn't have the fuel gauge...but the instructions say. if the button on the end is green you have above 15% of it's charge capacity, red indicates low voltage of battery pack, and blinking red indicates it is nearly depleted and needs recharge.

This will be 5th year of use come spring, and as of last year using it in our Ego mower, I've noticed no difference in performance, although we have a smaller yard, about 2000sq ft of lawn.

Ego mowers are ideal for smaller lawns <5k sq feet. That's a single charge cycle / wk which is 19 years (1000 charges / 52 weeks). Only thing is, ego warranty's you for 5 of those years.