Battery issue with push mower?

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  • (Edited)
Battery, charger or mower problem?

The mower w/battery and charger was purchased in August 2016

I used to be able to mow both my (small- abt. 3,500 sq. ft. total) front and back yards with one charge as recently as last fall. Starting this spring I could barely get through one or the other. The last time I got about 3/4 of the back mowed before the light turned red, then flashed red and died. When I put the battery in the charger, all of the green bars lit up, as though the battery was fully charged, and the charger shut down. When I put the battery in the mower, it ran for a few seconds, then the red light flashed and the mower stopped.
I called customer service and they told me to bring the mower in to Home Depot for service. The CS agent gave me the impression that HD could test the battery and charger, in case that is where the problem lies. The folks at HD said that was not the case, unlike other companies, EGO does not provide them with a way to test either component.
Any suggestions on how I can check the battery without losing the mower for weeks - and having to pay someone to mow my lawn?
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carlainmichigan

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Posted 2 months ago

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William E Hanson

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Assuming you do not own another EGO tool to test your battery. Take your battery to Home Depot and test it on a display tool, but be sure that an associate know what you're doing first. This way you could determine if it's the battery or not.
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Oregon Mike, Champion

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I wonder if HD would allow that. Seems kind of risky to test an unknown condition battery on something HD would hope to sell one day. Might damage the tool, potentially. 
Carla if you go to the store and ask to try this, let us know what they said? 
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carlainmichigan

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I tried that yesterday, actually the guy in repairs suggested it, but the person in the garden center was clueless. I am going to try the Ace Hardware down the street tomorrow. If the weather holds I might hit another one or two Home Depot’s tomorrow as well, if necessary. Failing that, I will try posting on Nextdoor and see if any nearby EGO owner would be willing to help.

It seems ridiculous that Home Depot doesn’t have a spare battery and charger at each store so they could quickly eliminate or confirm battery/charger issues on the spot, rather than sending the entire mower to Indiana for servicing. Good customer service, too. The repair guy Ryobi and Stihl provide them for on-site testing.
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Oregon Mike, Champion

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Do you have any other EGO tools and batteries/chargers? If so, try that battery in a known good tool and charger. 
One other thing to try with the battery is into the fridge overnight just to see if it somehow resets the battery circuitry.
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carlainmichigan

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I do not own any other EGO tools. And this is making me rethink buying their snow blower.
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William E Hanson

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Carla, the snow blower is awesome. Don't allow 1 experience stop you.
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carlainmichigan

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I found someone in my neighborhood who was willing to help me out and brought over his newly purchased (this spring) blower, 2.5aH battery and charger.

Put his battery in my mower and the mower worked.
Put my 5 aH battery in his blower and it ran for a minute or so with the red light on, then died.
Put his battery in my charger and it worked as usual - bars progressed from two green bars to four bars, then shut off.
Put my battery on his charger, after it had died in his blower, and it immediately showed as fully charged and the charger shut off (a matter of seconds from putting battery on charger to charger shutting off).

In short, my mower and charger worked as they should with his battery, with my battery none of the tools or chargers worked

So the battery is the problem, right?

How do I get customer service to agree?
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Oregon Mike, Champion

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Call CS and tell them exactly what you just posted here. It's the battery.
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Ken, Champion

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And that's an easy fix. They'll ship you out a replacement battery pretty quickly.

Of course this is a holiday weekend, so there will be a slight delay because of that.
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William E Hanson

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You actually did their work for them; should be easy for them to replace your battery
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carlainmichigan

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I just got off the phone with customer service (after a 30 minute wait - not too bad) and a very nice young woman agreed that I need a new battery and should get one this week. I will post when it arrives.

Feeling better about EGO now. I will feel much better when my battery arrives.
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Ken, Champion

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That's not a bad wait coming off a holiday weekend.

Let us know how long the battery takes to arrive.
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Simon

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Just had something very similar with a 7.5Ah battery pack. Same symptoms, the battery was empty, I had mowed for a decent amount of time and confirmed many times with other EGO tools, but the charger "thinks" it is full and all 4 lights turns green right away (on a fast charger). I tried it in a slow charger (the black one without 4 lights) and same, it detects the battery as full. Great and fast support and service from Jayme at the EGO support desk, the battery is still under warranty and they will send a new one. 

I believe nothing is wrong with the mower itself, unless there is something happening at the system level which the battery packs does not tolerate... hard to tell as mowers don't have OBD ports yet... But I am guessing the same component goes bad on our batteries. My guess is either a heat sensor goes bad and the BCM locks the charge or there is something truly bad with the BCM itself. Without opening the pack and probing each of these 2 components it is difficult to really tell, but if anyone has investigated, it would be nice to know...   
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William E Hanson

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This probably explains why placing a battery into the refrigerator "resets" the battery when the sensor "copls" down.
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Simon

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I don't think it's a matter of letting the sensor (s) cool down. I think they are just fried/bad and need to be replaced (... assuming the problem is the sensor (s)... which is just a guess at this point...). I checked and tried my battery in the charger several time after the event. It had been kept in a cool place so I am certain the sensors were "cooled down". It was behaving the same way (charger "thinking" the battery is full...) every time...  
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William E Hanson

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Simon, wouldn't it be worth a try since several had reported this method to have restored theirs?
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carlainmichigan

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Well, if anyone in West Michigan wants to dissect a “dead” battery, I know where you can get one. ; )
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carlainmichigan

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I finally got my new battery on Thursday. I mowed on Friday and everything seems O.K. I mowed both front and back yards on one charge, with power to spare. And the grass was longer than usual.


I guess the fact that the battery cannot be shipped by air explains the four days it took to get from California to Michigan. (Sorry about the upside-down image.)



If the battery cannot be shipped by airplane or boat, how the heck did it get here from China?
(Edited)
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Ken, Champion

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A lot of domestic shippers contract for space in the cargo holds of passenger planes. Lithium ion batteries are a definite no-no there.

Bulk shipments from China would be on dedicated cargo ships and aircraft.
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carlainmichigan

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So they are just forbidden on passenger planes/vessels? No worries for the crew on cargo transport?
(Edited)