POLL: mower, battery door removal

  • 1
  • Idea
  • Updated 9 months ago
  • Under Consideration
  • (Edited)
Merged

This conversation has been merged. Please reference the main conversation: ego mower battery cover hard to open

POLL: Is this a feature you would like to see Ego implement for future mowers?

Summary: mower battery door removal evaluation

Background:
A couple of customers have expressed dissatisfaction with the battery door design, specifically that it cannot be locked in the open position, and therefore takes two hands.  Our more senior mower operators have stated that having both hands to lift and manipulate the battery into position would be helpful.

Discussion:
One potential down side is that the battery is exposed to more dust/debris; however, this should be a non-issue as the battery is already very robustly protected from dust/debris and minor water intrusion.   The attached picture shows very little dust at the bottom of the battery compartment after mowing for about 45 minutes (bagging not mulching).  The mower does not have active cooling, e.g. fan drawing air into the battery like it has during cooling, therefore, the potential for sucking in additional dust/debris is pretty much minimal.

Procedure:
For the 20" Gen 1 mower, tip the mower back (storage position); let the handle down and rest it on the ground; open the battery door; remove four #3 Philips screws which retain the pivot bar clamps; remove the entire door assembly.

Pros:
Simplified design (less cost to produce mower)
Easier load/unload of battery (less operator fatigue and frustration).
Better ventilation of battery (lower operating temperature, increased longevity)
Potential for less heat retention in the motor chassis area (increased motor/system life)

Cons:
Decreased ability for mower to survive a tidal wave event

Conclusion:
Ego, evaluate pros/cons of removal of the battery door assembly from future mower models.

Related Threads:
1) https://community.egopowerplus.com/ego/topics/mower-battery-cover

2) https://community.egopowerplus.com/ego/topics/i-am-worried-about-getting-the-battery-in-and-out-is-t...
 
3) https://community.egopowerplus.com/ego/topics/learning-to-l-e-a-r-n-or-teaching-an-old-dog-new-trick...





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(a)Typical Engineer

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Posted 9 months ago

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Pantheon

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I like my mower, the battery compartment and lid just as it is. I would not change the design. I will not operate my mower without the battery cover.
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kenhigg

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Why not just make the door where it will engage a simple lock when pulled up to the full open position and remain open until it is pulled back down?

ken

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Blue Angel, Champion

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Agree with both of the above. I bag my grass and with the air leakage around the bag the mower usually ends up covered in debris. With no battery cover the compartment would end up filling with dust an debris.

The 100% solution is to make a door that stays open on its own, in my opinion. :-)
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David Cline, Champion

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As others said, removal would only be a first step to upgrading the hinge or adding a spring. Since the lid latches closed, a spring would probably be one of the more simple solutions

The most simple—yet somewhat unattractive—solution might be a self-stick 3m hook attached to the front of the battery cover and a cord or strap with hooks on either end to latch the door to the handle.

I wouldn’t run the mower without the cover.
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Ken, Champion

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No, I don't want to modify the door. It's easy enough to hold open with the side of your arm if you need to use both hands on the battery. It's not like the door is heavy.

I can envision people mowing with the door open and then filing warranty claims after the air intakes on the battery gets clogged with dust.
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(a)Typical Engineer

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Ego doesn't have active cool on any of their tools, therefore, the likelihood that anything is ingested into the battery is very unlikely.
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szwoopp, Champion

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Gravity is sufficient, do not need a fan.  May not clog the vents but certainly get into the battery.  Bungee cord or clamp or prop stick seem like a more reasonable solution to the need 2 hands problem than door removal.
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(a)Typical Engineer

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So by this logic, all tools should have an enclosed battery bay; so that customers do not operate them, then file a warranty claim for a clogged battery?
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Ken, Champion

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As szwoopp said, it doesn't need to be ingested. My mower is regularly covered with pollen and wet grass clippings because a lawn mower doesn't work the same way as a hedge trimmer.

Seems like the tools that need an enclosed battery bay have them: Lawn mowers and snow blowers.
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szwoopp, Champion

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going a little over the top (a)TE. 
It is a matter of removing door for convenience v keeping door for possible extra protection.
Not sure that either of them are a critical need.
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(a)Typical Engineer

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Well there you go Ego, make a battery door that locks in the OPEN position.
(Edited)
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kenhigg

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In the string trimmer it appears air is pulled through the battery, down inside the handle, and across the motor while in operation. Is this similar to what happens with the mower? If so removing the cover during operation may reduce air flow across the battery?
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Ken, Champion

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I don't think it happens during operation of the mower, but there is a cooling fan in the charger that pulls air through the battery to cool it. I don't want to cover the battery with dirt and debris that kicks up while mowing without a door on the mower, then see the airflow restricted during charging.
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(a)Typical Engineer

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kenhigg, are you referring to the newer multi-tool PH1400 power head?  or the older dedicated string trimmers?
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kenhigg

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The string trimmer with the removable battery. There appears to be an impeller just above the filament head, presumably to pull air across the motor and out. Because there is no apparent entry point on the trimmer head assembly, it must be pulling clean air down through the shaft, entering the assembly that the battery attaches to? The possibility seemed reasonable that the moving air could be cooling the motor, battery and maybe the ecm? 
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(a)Typical Engineer

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For everyone that is concerned with more dust/debris being ingested into the battery by a mower without a battery door, have you considered the case of ALL of the other tools, the trimmers, the chainsaw and especially the blowers?  All of those tools hang the battery out there exposed to the elements.  The chainsaw is probably the worst because when you put the chainsaw down, which you will do most likely multiple times, you might  be putting it down in a pile of saw dust, or whatever else is on the forest floor.  Same for the string  trimmer.

And if you are really concerned, then you ought to implement a process where by you "sanitize" your battery before charging, e.g. dust it off, vacuum out the vents, maybe even put it into a "clean room".  Then once you've cleaned it, do you charge it in a HEPA filtered room?

The genius of Ego's battery design is how robust they made the batteries.  The dust screens are pretty porous and are more likely there to prevent larger debris from getting into them, rather than trying to prevent dust from entering the battery assembly.
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Ken, Champion

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On the trimmer the battery is five feet from the business end of the tool, and on the blowers the battery is far away from the action, too. And neither tool gets covered with the kind of pollen and dust my mower does.

Of course I spend more time using my tools than trying to figure out how to modify them.
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(a)Typical Engineer

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And the chainsaw?
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Ken, Champion

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I don't own one and haven't used one, so I don't know.

What is your theory on why Ego covers the batteries on the mowers and snow blower but nowhere else? Or why they designed it so it doesn't stay open on its own?
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(a)Typical Engineer

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I really don't appreciate your snide comment above (about spending time figuring out how to modify them); thus I won't be reading nor responding to anymore of your comments.  Honestly, I'd expect more from someone labeled a "Champion".
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Ken, Champion

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If you think my comment was snide let me point out this post of yours from above:

“And if you are really concerned, then you ought to implement a process where by you "sanitize" your battery before charging, e.g. dust it off, vacuum out the vents, maybe even put it into a "clean room". Then once you've cleaned it, do you charge it in a HEPA filtered room?”
(Edited)
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kenhigg

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Is the door spring loaded to close? If so could you simply remove the spring?

ken
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Oregon Mike, Champion

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Ken, I don't know about the 20" but on my 21" push model the lid doesn't open anywhere near vertical so gravity causes the lid to close. It can't stay open on its own because it just can't open far enough. The design prevents it. I guess that's on purpose, but I sure wish it would open just the inch or 2 more and stay open until I'm ready to close it. There is no spring close assist.
(Edited)
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kenhigg

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  • Hum... I see. So much for that idea. Can you add a shim or similar object in or around the hinge somehow that would impede the free movement of the hinge and hold it where you move it to?  
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Oregon Mike, Champion

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Yeah, there are any number of workarounds and there are a few threads devoted to those. Using a stick/ruler to prop the lid open. Using a bungee cord to hold it open, etc. These sorts of threads seem to be more about pointing out to Ego that they need to redesign how the lid opens so it will stay open especially for people who need both hands just to install and remove the battery.
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(a)Typical Engineer

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No springs on the 20" gen 1; you can see all the parts removed, nothing was left behind in the chassis.  Gravity is the closure mechanism.

Mike, I'm glad one person understands my motivation, thank you.
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Ken Higginbotham

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I wonder if operating the mower without the cover voids the warranty. Seems I personally would not want to stand behind my product if it were modified to this extent.

ken


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(a)Typical Engineer

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To be clear, modifying your mower will void the warranty.  My mower does not have a warranty  because I bought it second hand.  The purpose of this thread is to encourage Ego to revisit the design parameters of the mower door to make it easier for some customers to operate. And to evaluate whether said door is absolutely required.  And if there are additional long term benefits for battery/mower life if less heat is retained in the system.
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Oregon Mike, Champion

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I just did a quick and dirty strap install onto my 5 ah to show the point. I just used some adhesive velcro squares and some velcro strap material. This shows how even the lid opening doesn't have to be changed, although that would still be a great idea. This just goes to show how, potentially, simple the one handed removal of the battery can be. It lifted right out once the battery release button was pressed. Not only for those with grip problems, but for anyone. Thanks to my wonderful wife for her hands. 
Something a bit more substantial and better secured to the battery housing would be a great improvement for handling the battery.
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Ken Higginbotham

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Cool - I may have to get me one of these mowers :)

I can see were having to use two hands because its heavy while pressing the release button and having to hold the lid open all at the same time is problematic...

ken

edit: Does the newer mowers have a brushless motor?


(Edited)
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Blue Angel, Champion

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Ken H., only the new 20” steel deck mowers have brushless motors. The original 20” and newer 21” mowers have brushed motors.
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Ken Higginbotham

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Cool. Other than amph rating differences, is there only one battery type for all devices?
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Blue Angel, Champion

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Yessir! The bigger tools will have more power using the bigger batteries, but any battery will power any tool.
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Ken, Champion

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Yep, all of Ego's batteries can be used on all the tools.
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Ken Higginbotham

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I wonder how many mowers and string trimmers they sell every year...

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