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DNAinaGoodWay
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Re: What about electric mowers and outboards?

Wed May 03, 2017 1:54 am

It's 48V, 75 Ahr, SLA, all in the link if you dig, but I wonder if they could be replaced with li-ion? Would it charge the same?
'12 SL last reading @ 2 yr, 22k, 260 GIDs, 62.35 Ahr

'15 SV w/QC, Mfd 5/14, Leased 8/14, 292 GIDs, 64.38 Ahr when new

@ 25 months, 25k, 267 GID, 56.88 Ahr
@ 29 months, 29k, 286 GID, 60.88 Ahr
@ 31 months, 30.3k, 274 GID, 58.39 Ahr

6.72 kW Array

LeftieBiker
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Location: Upstate New York, US

Re: What about electric mowers and outboards?

Wed May 03, 2017 2:41 am

You would need a different onboard (?) charger, or different programming at least, for lithium cells. SLA cells are a terrible idea for something like a riding mower. They wouldn't last very long under most conditions.
2013 "Brilliant Silver" SV with Premium Package and no QC, and 2009 Vectrix VX-1 with 18 Leaf cells.

The most offensive, tasteless phrase in use here is "Pulled the trigger." I no longer respond to posts that use it.

GetOffYourGas
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Location: Syracuse, NY

Re: What about electric mowers and outboards?

Wed May 03, 2017 5:38 am

Durandal wrote:I use the following:
https://www.lowes.com/pd/Kobalt-80-Volt ... /999929526
I've had it about a year so far, I have to swap batteries 3x to do the front yard, and we have 1/2 acre for the full plot, so it's roughly a 1/4 acre mow for those 3 batteries. It comes with 2 batteries, so it means taking a 5 minute break the first time, and then a 10 minute break the second swap. The batteries charge to full about 15 minutes slower than they deplete for me.


Wow, that sounds like more of a hassle than dealing with a cord (honestly, it's not that bad!). I have 1/3 of an acre lot so I'd need maybe 4 charges to get through it? Is this an older mower or is that what one should expect from a battery mower?
~Brian

EV Fleet:
2011 Torqeedo Travel 1003 electric outboard on a 22' sailboat
2012 Leaf SV
2015 C-Max Energi (302A package)

Foschas
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Leaf Number: 320277
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Re: What about electric mowers and outboards?

Wed May 03, 2017 9:30 am

GetOffYourGas wrote:
Durandal wrote:I use the following:
https://www.lowes.com/pd/Kobalt-80-Volt ... /999929526
I've had it about a year so far, I have to swap batteries 3x to do the front yard, and we have 1/2 acre for the full plot, so it's roughly a 1/4 acre mow for those 3 batteries. It comes with 2 batteries, so it means taking a 5 minute break the first time, and then a 10 minute break the second swap. The batteries charge to full about 15 minutes slower than they deplete for me.


Wow, that sounds like more of a hassle than dealing with a cord (honestly, it's not that bad!). I have 1/3 of an acre lot so I'd need maybe 4 charges to get through it? Is this an older mower or is that what one should expect from a battery mower?



The Kobalt is only rated at 2.0 amp hours. The newer EGO is rated at 7.5 amp hours. So almost 4 times the capacity. I did 1/2 Acre with the EGO no problems YMMV. There will be capacity loss over time but the EGO would easily do a third acre.

GetOffYourGas
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Re: What about electric mowers and outboards?

Wed May 03, 2017 11:19 am

Ah is only part of the equation. The Kobalt is also a higher voltage than most, at 80V. The EGOs seem to be at 56V. There's also the question of efficiency.

But I'm glad to hear you have had good results with the EGO mower. The question is, do I bite now or wait another year or two (and deal with the cord in the meantime). It won't be too long though. My son is almost old enough to help mow. When he is, I don't want him fussing with a cord.
~Brian

EV Fleet:
2011 Torqeedo Travel 1003 electric outboard on a 22' sailboat
2012 Leaf SV
2015 C-Max Energi (302A package)

Durandal
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Re: What about electric mowers and outboards?

Sat May 06, 2017 9:12 am

There are 5ah and 7.5ah versions of the Ego, with the 5ah being at the same price point.
Kobalt is 80v *2ah = 160Wh/battery * 2 batteries = 320Wh
Ego is 56v * 5ah = 280Wh/battery * 1 battery = 280Wh
Ego is 56v * 7.5ah = 420Wh/battery * 1 battery = 420Wh

You'll get more mow time out of one battery with the Ego for sure. You'll get more mow time total with the 7.5ah Ego. I don't mind the breaks, myself, it reminds me to take a break and not get heat stroke. It does slow down the process as a whole, however.

If you mow regularly, I think the Ego is likely the better choice. I went with the Kobalt as the higher voltage allows it to power through tougher parts, and I tend to be neglectful of my yard. I've noticed that 2 batteries can do my front yard when I actually stay on top of it regularly, but I try not to mow more than 5x a year! :lol: Also the Kobalt has a low hassle 5 year warranty vs the Ego 3 year warranty, since Kobalt is Lowe's brand.
Pulled the trigger on going EV on 10/2016 with a 2012 Leaf, and a Tesla Model 3 reservation expected to receive in late 2018.

BrockWI
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Re: What about electric mowers and outboards?

Sat May 06, 2017 9:25 am

Interesting stuff.

FYI, the older Black & Decker CM1836 that I own has three 12v SLA in series (I charge them individually) at 9ah each or 324Wh, it weighs a LOT more than similar li-Ion versions.

Black & Decker just released the CM2060 which uses a 2.5ah @ 60v or 150Wh, it does have two "slots" for two batteries, so essentially you have 300Wh on board. I believe it only uses one battery at a time, not sure why they would do that, weird. Also it says you can charge the 2.5ah 60v battery in a standard 20v li charger, I am not sure how that works, but I am curious.
3 kw solar pv - XW6048 - 8 L16's
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GetOffYourGas
Posts: 1446
Joined: Tue Dec 20, 2011 6:56 pm
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Location: Syracuse, NY

Re: What about electric mowers and outboards?

Sun May 07, 2017 6:26 pm

Thanks for the extra info.

Wow, you mow 5x/year? If I did that, the grass would be waist deep! I tried to go two weeks last spring without mowing, and it was so think that the AC-DC rectifier blew on my mower. Thankfully it was a $6 part on digikey...

Sounds like the EGO is a good fit for me. I still hesitate at the $550 price tag. I think I paid under $150 for my corded mower. Not that it isn't worth it, but the cheapskate in me says to wait for the price to come down just a little more.
~Brian

EV Fleet:
2011 Torqeedo Travel 1003 electric outboard on a 22' sailboat
2012 Leaf SV
2015 C-Max Energi (302A package)

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