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Milwaukee M18 lawnmower

littlelebowski

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Joined
Jul 20, 2018
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89
Location
VA
I see that you can buy 50ft and 100ft coax cables at Home Depot with ends already on them. One of those would probably work for me even if I had to coil up a little extra somewhere.


Is it OK to run this outside in the sun/weather? It doesn't say anything about that. And how do you make sure the outside connection is weatherproof? Is it a good idea to put some shrink-wrap over the whole connection?
Pretty sure you’re on the wrong topic, bud.
 
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CarpetGuy

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Joined
Mar 13, 2022
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3
I bought an Ego mower and weed eater about 4 years ago. After 2 years, BOTH started a glitch at the same time. They would run for a second or two, and shut off. I can't wrap my mind around how both weed eater and mower, and BOTH batteries would go bad at the same time. Last year I had a lawn service. I'm not sure what to do this year. I went electric because all the modern gas mowers throttle go bad on me. I miss the old manual throttle with the rabbit and the turtle, for high and low.
 

CarpetGuy

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Mar 13, 2022
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48548

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May 14, 2008
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Location
Phoenix
One note, the blade has a huge nut, don't keep the mower to low, it gouged me grass when at an angle....
 

ALTEREGO

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May 15, 2018
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@HOME
One note, the blade has a huge nut, don't keep the mower to low, it gouged me grass when at an angle....
Hey 48548,

Do you know how the Milwaukee lawn mower draws power from the batteries? Does it use power from one battery first then the next?

The reason I ask is because I used a 9.0 and a 12.0 batteries on my mower the other day, the 9.0 was almost full, only missing 1 "light" to be completely charged, the 12.0 was completely full and when I put them in the mower the mower indicated half capacity (only two lights on). My lawn is pretty small so I was able to do 2 passes easily then I wanted to keep going so I would discharge my batteries completely but after a few more passes only one of the 2 lights was off (1 light left on).
I took the batteries out and to my surprise when I went to check the batteries the 9.0 battery had only 1 light left but the 12.0 battery was still full :unsure:.
 

Odd-job

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Joined
Aug 13, 2017
Messages
2,261
Location
SF Bay Area
Hey 48548,

Do you know how the Milwaukee lawn mower draws power from the batteries? Does it use power from one battery first then the next?

The reason I ask is because I used a 9.0 and a 12.0 batteries on my mower the other day, the 9.0 was almost full, only missing 1 "light" to be completely charged, the 12.0 was completely full and when I put them in the mower the mower indicated half capacity (only two lights on). My lawn is pretty small so I was able to do 2 passes easily then I wanted to keep going so I would discharge my batteries completely but after a few more passes only one of the 2 lights was off (1 light left on).
I took the batteries out and to my surprise when I went to check the batteries the 9.0 battery had only 1 light left but the 12.0 battery was still full :unsure:.
Sorry am not the intended recipient, but am weighing in anyways because this is the internet.

Sounds like you might have an out of balance 9.0 and/or are experiencing some voltage sag due to the high power draw of the mower.

Don't have a mower, but have a dual blower and power supply and both simultaneously utilize the 2x and 4x batteries. They are both really weighed down by the weakest link/battery in the chain so ideally one would not mix and match capacities and HO vs XC batteries.

Anyways my trial and error 2 cents.
 

dnschmidt

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Joined
Oct 3, 2014
Messages
7,270
Location
Phoenix, AZ
Sadly, the Milwaukee 9.0 battery ***** and has always sucked. It uses smaller cells than the 12.0 and has been discontinued by Milwaukee as they had a ton of warrantee replacement claims on these including mine.
 

Formula

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Joined
Oct 17, 2014
Messages
824
Sadly, the Milwaukee 9.0 battery ***** and has always sucked. It uses smaller cells than the 12.0 and has been discontinued by Milwaukee as they had a ton of warrantee replacement claims on these including mine.
I've had lots of issues with M18 batteries of all sizes. They don't seem to last more than a year or two without having problems. I might just start buying the knock off brands at a fraction of the price.
 
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dnschmidt

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Oct 3, 2014
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Phoenix, AZ
I've had lots of issues with M18 batteries of all sizes. They don't seem to last more than a year or two without having problems. I might just start buying the knock off brands at a fraction of the price.
Most have a three year warrantee. USE IT.
 

ALTEREGO

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May 15, 2018
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420
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@HOME
Sorry am not the intended recipient, but am weighing in anyways because this is the internet.

Sounds like you might have an out of balance 9.0 and/or are experiencing some voltage sag due to the high power draw of the mower.

Don't have a mower, but have a dual blower and power supply and both simultaneously utilize the 2x and 4x batteries. They are both really weighed down by the weakest link/battery in the chain so ideally one would not mix and match capacities and HO vs XC batteries.

Anyways my trial and error 2 cents.
Hey @Odd-job, on the contrary I appreciate the help. I must agree, for some reason the 9.0 are the latest worst from Milwaukee, my guess is what you suggest that the difference in battery capacity is causing the issue, I would still like to see if some one has taken out their batteries when the mower shows half charge and see if both 12.0 batteries also show half charge. Thank you for the response!
Sadly, the Milwaukee 9.0 battery ***** and has always sucked. It uses smaller cells than the 12.0 and has been discontinued by Milwaukee as they had a ton of warrantee replacement claims on these including mine.
@dnschmidt yep, worst modern battery from Milwaukee.
I've had lots of issues with M18 batteries of all sizes. They don't seem to last more than a year or two without having problems. I might just start buying the knock off brands at a fraction of the price.
@Formula I have only had issues with the 9.0 battery that came with my weed eater and with a smaller (3.0 I think?) one that came with a drill set long long time ago. Milwaukee replaced the 9.0 battery, couldn't be happier with the customer support on that one. The smaller battery was kind of my fault, I was "saving it" and I didn't charge it for years until I learned more about batteries and tried to charge it and it didn't work, warranty had long expired :S
Most have a three year warrantee. USE IT.
@dnschmidt, agree again, I'm not 100% sure about the guidelines but if you suspect something is off with the battery check the warranty and send it to Milwaukee, great customer service!

If anyone owns a Milwaukee lawn mower and wouldn't mind checking the individual batteries when using the mower and mower capacity shows 50% (two lights I think?) I will appreciate it. I will not use the 9.0 battery just in case, thank you in advance!
 
Last edited:

Beemer

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Joined
Jun 21, 2020
Messages
1,400
Location
Northeast
Do the Milwaukee M18, and battery mowers in general, get affected by dusty conditions?
Are the motors sealed for that?
Can they be washed down?
It seems as the weather get drier and drier there is too often a dust storm that occurs due to mowing.
 

Ton ton

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Joined
Oct 16, 2019
Messages
4,592
Location
Page County,VA
Do the Milwaukee M18, and battery mowers in general, get affected by dusty conditions?
Are the motors sealed for that?
Can they be washed down?
It seems as the weather get drier and drier there is too often a dust storm that occurs due to mowing.
I would use compressed air to clean this kind of stuff. Electric powered stuff doesn't like water too much.
 

jonesg

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Mar 15, 2010
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1,698
Location
northern Maine/
I bought a house last year and need to buy a lawn mower.

Last time I bought a random 21" gas multi-mower at the big box store. It worked mostly fine. At least for a couple years. I think it was $250 but that's probably $350 now. I replaced it with a Stihl electric mower for $600 solely so that I didn't have to mess with gas. I was pretty happy with the Stihl overall.

My neighbor says I should buy a Kobalt or Ego electric mower. The price is nearly the same, but no gas to mess with, and quieter. Sounds good but I know a lot of people who had the batteries die after a few years and have to throw the whole thing away because the batteries cost more than the mower or aren't even available.

I saw they just released a Milwaukee M18 mower. It looks seriously good, and requires use of 2 M18 batteries. But it's $1000.

I want to go electric but the gas mowers are looking better and better.
as a property owner you might want a tractor with 42" inch cut, paid $600 for mine, why walk when you can ride, attach a garden trailer and get all sorts of work done.
 
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JackOfDiamonds

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Jul 31, 2020
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706
Location
Idaho (USA)
No way would a riding mower make sense for me. My lawn is semi-large but it's a lot of odd shapes and strips.

Here's my update, I bought a Ryobi 40V combo deal last year for like $400. Mower, weed eater, and 1 battery with lame slow charger. The mower quit at the end of the very first season and I didn't know if it was the 40V battery or mower so I just borrowed a mower for the last few mows. Home Depot wouldn't warranty the mower and said I had to call Ryobi. That was a PITA and they wouldn't let me return it, only repair the mower, but I wasn't even sure the problem was the mower. I bought another 40V battery at home Depot for like $200+ just to troubleshoot, and I figured I wanted a spare battery anyway. The mower still didn't work even with the new battery so I concluded the battery that came in my kit was fine. What ended up doing because I needed a mower this spring is I went back to HD like a sucker and bought a slightly nicer Ryobi mower that came with a fast charger for $300 and returned the other battery I bought. So basically for $100 more than a spare battery would have cost me I get a new mower and now I have 2 batteries, a fast charger, and get to keep the trimmer. So far as I can tell the 40v platform is ok, the cheap 40V mowers are about as junky as you would expect, but the new 40V mower seems decent ad long as it keeps working.
 

TdK71

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Joined
Apr 10, 2014
Messages
69
Are you invested in any particular battery powered platforms currently? If so, I would go with that brand to save on batteries. And if you end up not liking it, you're not out so much money in batteries and a charger.

That being said, I think basic/minimal maintenance should get you 10 years out of a gas mower.
I've got a 51 year old Lawn-Boy that I use pretty regularly, if you properly maintain a quality piece of OPE it'll last a lifetime, excluding consumables, like bags, blades and the like.
 
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JackOfDiamonds

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Jul 31, 2020
Messages
706
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Idaho (USA)
Yep that's the false promise of green technology. Those old 2 stroke lawn boys would basically run for multiple lifetimes if you just keep oil in the gas and the air filter clean. Now we are using lithium batteries that will certainly die after a few years, with no credible recycling plan, and probably no replacement battery available in a few years either because there's no industry standards for batteries. And using electronic mowers that will probably have a PC board fail with no way to replace it. Sure the old mowers created emissions, but is the cycle of disposable junk we replaced them with really saving the planet or just making global conglomerates richer.

I do like my electric mower actually. I guess I just wish for the electric equivalent of the lawn boy that's built to be serviceable and last a long time.
 

Ton ton

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Oct 16, 2019
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Page County,VA
as a property owner you might want a tractor with 42" inch cut, paid $600 for mine, why walk when you can ride, attach a garden trailer and get all sorts of work done.
The big advantage of a riding lawn mower is that you can take it to town with people in the trailer. This is what people do in Shenandoah, VA. That being said, I still use a push mower for those hard to get to areas of the yard.
 

Aileron

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Apr 15, 2019
Messages
460
Location
outside
Is it really that much more of a burden to top a fuel tank and check the oil compared to pulling batteries and leaving them on a bench to charge? You still have blades to sharpen either way. I can spray off my fuel burner and not have to worry about the electronics.
 
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