Re: Ego vs Greenworks? 7aH EGO battery?

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Re: Ego vs Greenworks? 7aH EGO battery?

Electric Vehicle Discussion List mailing list
I have the 7.5Ah EGO self driving and used to rave about it and take it to
talks about Energy.
But then my battery (or charger) died and I cannot face a $350 battery for a
$450 mower.
I suspect the charger maybe.  I have manually charged the cells while
checking all the voltages and they seem to be OK .

But in the mower or charger they only show the RED light.
System is maybe 3 years old?

Bob

-----Original Message-----
From: EV <[hidden email]> On Behalf Of Haudy Kazemi via EV
Sent: Wednesday, June 24, 2020 3:55 PM
To: Electric Vehicle Discussion List <[hidden email]>
Cc: Haudy Kazemi <[hidden email]>
Subject: Re: [EVDL] Ego vs Greenworks?

No experience with Stihl electrics., but I do have 2-3 years experience
using 2 EGO manual drive mowers (and 2 blowers). They're much better than
the previous Pb-acid mower and corded mowers I have used.

The 7.5 Ah 56v battery (14s3p, using 2.5Ah 18650 cells) (14 x 4.0v = 56v
nominal, 14x4.2=58.8 peak) is best for the mower, especially if facing thick
grass as that is a high C rate scenario. The 5.0 Ah battery (14s2p, 2.5Ah
cells) works fine for smaller yards or thinner grass. 4.0 Ah batteries
(14s2p, 2.0Ah cells), 2.0 Ah (14s1p, 2.0Ah cells), and 2.5 Ah (14s1p, 2.5Ah
cells) batteries also exist.

Online searches indicate a 10.0Ah battery known as BA5600T also exists, at
least in Europe. I guess that may be 14s3p or 14s4p, respectively using
3.3Ah or 2.5 Ah cells. There is a battery external physical dimensions size
limit in their mower and snowblower designs, possibly preventing 14s4p.

It is unclear if there is a switch from 18650 to 21700 cells in the 10.0 Ah
unit. From the cell capacity ranges published here, it appears 3.3Ah+
capacity 18650 cells exist, making a 14s3p 10.0Ah configuration possible.
https://www.dnkpower.com/teslas-mass-production-21700-battery/

A weakness in older EGO batteries is there is no state of charger indicator
until you are down to the last 15% when a light turns solid red. They have
added a gauge to new batteries.


On Wed, Jun 24, 2020, 13:15 Denis Boutet via EV <[hidden email]> wrote:

> Hi everyone, any one have experience with Stihl?
>
> Denis
>
> Le 20-06-24 à 13 h 19, EVDL Administrator via EV a écrit :
> > I've owned a total of 4 E-mowers (not counting the Elec-traks) so
> > far
> since
> > 1994 - a B&D, two Yard Machines (MTD), and a Greenworks.
> >
> > The B&D lasted the longest, but I had to replace the motor and the
> wheels.
> > Eventually the replacement motor died too, and since the plastic
> > deck was starting to crack from age and hard use, I gave up on it.
> > But at least spare parts were mostly available, and usually at
> > reasonable prices.
> >
> > The MTDs' motors both failed too.  The official factory motors were
> priced
> > over $300, more than the entire mowers cost, so the mowers were
> essentially
> > disposable.
> >
> > Probably the Greenworks will prove to be disposable too.  It's a
> > cheap
> and
> > cheerful Chinese mower.
> >
> > David Roden, EVDL moderator & general lackey
> >
> > To reach me, don't reply to this message; I won't get it.  Use my
> > offlist address here : http://evdl.org/help/index.html#supt
> >
> > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> >       First they came for the journalists.  We don't know what happened
> >       after that.
> >
> >                                          -- Unknown = = = = = = = =
> > = = = = = = = = = = = = = = = = = = = = = = = = = = =
> >
> > _______________________________________________
> > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> > ARCHIVE: http://www.evdl.org/archive/index.html
> > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
> > Please discuss EV drag racing at NEDRA (
> http://groups.yahoo.com/group/NEDRA)
> >
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> http://groups.yahoo.com/group/NEDRA)
>
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Re: Ego vs Greenworks? 7aH EGO battery?

Electric Vehicle Discussion List mailing list
Maybe you can claim on warranty? Also, I noticed the EGO Community forums
are not accessible now. They were working earlier today. The message I see
now is unclear about whether it is a maintenance outage or a
decommissioning where the forum is not coming back. There was decent info
in those forums.


On Wed, Jun 24, 2020, 16:04 Robert Bruninga <[hidden email]> wrote:

> I have the 7.5Ah EGO self driving and used to rave about it and take it to
> talks about Energy.
> But then my battery (or charger) died and I cannot face a $350 battery for
> a
> $450 mower.
> I suspect the charger maybe.  I have manually charged the cells while
> checking all the voltages and they seem to be OK .
>
> But in the mower or charger they only show the RED light.
> System is maybe 3 years old?
>
> Bob
>
> -----Original Message-----
> From: EV <[hidden email]> On Behalf Of Haudy Kazemi via EV
> Sent: Wednesday, June 24, 2020 3:55 PM
> To: Electric Vehicle Discussion List <[hidden email]>
> Cc: Haudy Kazemi <[hidden email]>
> Subject: Re: [EVDL] Ego vs Greenworks?
>
> No experience with Stihl electrics., but I do have 2-3 years experience
> using 2 EGO manual drive mowers (and 2 blowers). They're much better than
> the previous Pb-acid mower and corded mowers I have used.
>
> The 7.5 Ah 56v battery (14s3p, using 2.5Ah 18650 cells) (14 x 4.0v = 56v
> nominal, 14x4.2=58.8 peak) is best for the mower, especially if facing
> thick
> grass as that is a high C rate scenario. The 5.0 Ah battery (14s2p, 2.5Ah
> cells) works fine for smaller yards or thinner grass. 4.0 Ah batteries
> (14s2p, 2.0Ah cells), 2.0 Ah (14s1p, 2.0Ah cells), and 2.5 Ah (14s1p, 2.5Ah
> cells) batteries also exist.
>
> Online searches indicate a 10.0Ah battery known as BA5600T also exists, at
> least in Europe. I guess that may be 14s3p or 14s4p, respectively using
> 3.3Ah or 2.5 Ah cells. There is a battery external physical dimensions size
> limit in their mower and snowblower designs, possibly preventing 14s4p.
>
> It is unclear if there is a switch from 18650 to 21700 cells in the 10.0 Ah
> unit. From the cell capacity ranges published here, it appears 3.3Ah+
> capacity 18650 cells exist, making a 14s3p 10.0Ah configuration possible.
> https://www.dnkpower.com/teslas-mass-production-21700-battery/
>
> A weakness in older EGO batteries is there is no state of charger indicator
> until you are down to the last 15% when a light turns solid red. They have
> added a gauge to new batteries.
>
>
> On Wed, Jun 24, 2020, 13:15 Denis Boutet via EV <[hidden email]> wrote:
>
> > Hi everyone, any one have experience with Stihl?
> >
> > Denis
> >
> > Le 20-06-24 à 13 h 19, EVDL Administrator via EV a écrit :
> > > I've owned a total of 4 E-mowers (not counting the Elec-traks) so
> > > far
> > since
> > > 1994 - a B&D, two Yard Machines (MTD), and a Greenworks.
> > >
> > > The B&D lasted the longest, but I had to replace the motor and the
> > wheels.
> > > Eventually the replacement motor died too, and since the plastic
> > > deck was starting to crack from age and hard use, I gave up on it.
> > > But at least spare parts were mostly available, and usually at
> > > reasonable prices.
> > >
> > > The MTDs' motors both failed too.  The official factory motors were
> > priced
> > > over $300, more than the entire mowers cost, so the mowers were
> > essentially
> > > disposable.
> > >
> > > Probably the Greenworks will prove to be disposable too.  It's a
> > > cheap
> > and
> > > cheerful Chinese mower.
> > >
> > > David Roden, EVDL moderator & general lackey
> > >
> > > To reach me, don't reply to this message; I won't get it.  Use my
> > > offlist address here : http://evdl.org/help/index.html#supt
> > >
> > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
> > >       First they came for the journalists.  We don't know what happened
> > >       after that.
> > >
> > >                                          -- Unknown = = = = = = = =
> > > = = = = = = = = = = = = = = = = = = = = = = = = = = =
> > >
> > > _______________________________________________
> > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> > > ARCHIVE: http://www.evdl.org/archive/index.html
> > > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
> > > Please discuss EV drag racing at NEDRA (
> > http://groups.yahoo.com/group/NEDRA)
> > >
> > -------------- next part -------------- An HTML attachment was
> > scrubbed...
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> > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200624/a73
> > 8989d/attachment.html
> > >
> > _______________________________________________
> > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> > ARCHIVE: http://www.evdl.org/archive/index.html
> > INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
> > Please discuss EV drag racing at NEDRA (
> > http://groups.yahoo.com/group/NEDRA)
> >
> >
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> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
> ARCHIVE: http://www.evdl.org/archive/index.html
> INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
> Please discuss EV drag racing at NEDRA (
> http://groups.yahoo.com/group/NEDRA)
>
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Re: Ego vs Greenworks? 7aH EGO battery?

Electric Vehicle Discussion List mailing list
The ego warranty is only 3 years on the batteries and chargers (5 years
on the equipment).  It is only good for the original purchaser, and only
if purchased at an authorized dealer, and you must have a copy of your
receipt to prove the above.

Other than those restrictions, I've been relatively happy with their
warranty coverage, having to make use of it several times on the self
propel unit on my mower. (I have most of their other lawn equipment and
the mower SP unit is the only thing that I've ever had an issue with.)


I got a message that they were having issues with the forum provider and
were going to be switching to a different provider, but no timeframe for
when they would come back.

Jay



On 6/24/20 6:30 PM, Haudy Kazemi via EV wrote:

> Maybe you can claim on warranty? Also, I noticed the EGO Community forums
> are not accessible now. They were working earlier today. The message I see
> now is unclear about whether it is a maintenance outage or a
> decommissioning where the forum is not coming back. There was decent info
> in those forums.
>
>
> On Wed, Jun 24, 2020, 16:04 Robert Bruninga <[hidden email]> wrote:
>
>> I have the 7.5Ah EGO self driving and used to rave about it and take it to
>> talks about Energy.
>> But then my battery (or charger) died and I cannot face a $350 battery for
>> a
>> $450 mower.
>> I suspect the charger maybe.  I have manually charged the cells while
>> checking all the voltages and they seem to be OK .
>>
>> But in the mower or charger they only show the RED light.
>> System is maybe 3 years old?
>>
>> Bob
>>
>> -----Original Message-----
>> From: EV <[hidden email]> On Behalf Of Haudy Kazemi via EV
>> Sent: Wednesday, June 24, 2020 3:55 PM
>> To: Electric Vehicle Discussion List <[hidden email]>
>> Cc: Haudy Kazemi <[hidden email]>
>> Subject: Re: [EVDL] Ego vs Greenworks?
>>
>> No experience with Stihl electrics., but I do have 2-3 years experience
>> using 2 EGO manual drive mowers (and 2 blowers). They're much better than
>> the previous Pb-acid mower and corded mowers I have used.
>>
>> The 7.5 Ah 56v battery (14s3p, using 2.5Ah 18650 cells) (14 x 4.0v = 56v
>> nominal, 14x4.2=58.8 peak) is best for the mower, especially if facing
>> thick
>> grass as that is a high C rate scenario. The 5.0 Ah battery (14s2p, 2.5Ah
>> cells) works fine for smaller yards or thinner grass. 4.0 Ah batteries
>> (14s2p, 2.0Ah cells), 2.0 Ah (14s1p, 2.0Ah cells), and 2.5 Ah (14s1p, 2.5Ah
>> cells) batteries also exist.
>>
>> Online searches indicate a 10.0Ah battery known as BA5600T also exists, at
>> least in Europe. I guess that may be 14s3p or 14s4p, respectively using
>> 3.3Ah or 2.5 Ah cells. There is a battery external physical dimensions size
>> limit in their mower and snowblower designs, possibly preventing 14s4p.
>>
>> It is unclear if there is a switch from 18650 to 21700 cells in the 10.0 Ah
>> unit. From the cell capacity ranges published here, it appears 3.3Ah+
>> capacity 18650 cells exist, making a 14s3p 10.0Ah configuration possible.
>> https://www.dnkpower.com/teslas-mass-production-21700-battery/
>>
>> A weakness in older EGO batteries is there is no state of charger indicator
>> until you are down to the last 15% when a light turns solid red. They have
>> added a gauge to new batteries.
>>
>>
>> On Wed, Jun 24, 2020, 13:15 Denis Boutet via EV <[hidden email]> wrote:
>>
>>> Hi everyone, any one have experience with Stihl?
>>>
>>> Denis
>>>
>>> Le 20-06-24 à 13 h 19, EVDL Administrator via EV a écrit :
>>>> I've owned a total of 4 E-mowers (not counting the Elec-traks) so
>>>> far
>>> since
>>>> 1994 - a B&D, two Yard Machines (MTD), and a Greenworks.
>>>>
>>>> The B&D lasted the longest, but I had to replace the motor and the
>>> wheels.
>>>> Eventually the replacement motor died too, and since the plastic
>>>> deck was starting to crack from age and hard use, I gave up on it.
>>>> But at least spare parts were mostly available, and usually at
>>>> reasonable prices.
>>>>
>>>> The MTDs' motors both failed too.  The official factory motors were
>>> priced
>>>> over $300, more than the entire mowers cost, so the mowers were
>>> essentially
>>>> disposable.
>>>>
>>>> Probably the Greenworks will prove to be disposable too.  It's a
>>>> cheap
>>> and
>>>> cheerful Chinese mower.
>>>>
>>>> David Roden, EVDL moderator & general lackey
>>>>
>>>> To reach me, don't reply to this message; I won't get it.  Use my
>>>> offlist address here : http://evdl.org/help/index.html#supt
>>>>
>>>> = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
>>>>        First they came for the journalists.  We don't know what happened
>>>>        after that.
>>>>
>>>>                                           -- Unknown = = = = = = = =
>>>> = = = = = = = = = = = = = = = = = = = = = = = = = = =
>>>>
>>>> _______________________________________________
>>>> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
>>>> ARCHIVE: http://www.evdl.org/archive/index.html
>>>> INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
>>>> Please discuss EV drag racing at NEDRA (
>>> http://groups.yahoo.com/group/NEDRA)
>>>>
>>> -------------- next part -------------- An HTML attachment was
>>> scrubbed...
>>> URL: <
>>> http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20200624/a73
>>> 8989d/attachment.html
>>>>
>>> _______________________________________________
>>> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
>>> ARCHIVE: http://www.evdl.org/archive/index.html
>>> INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
>>> Please discuss EV drag racing at NEDRA (
>>> http://groups.yahoo.com/group/NEDRA)
>>>
>>>
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>> _______________________________________________
>> UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub
>> ARCHIVE: http://www.evdl.org/archive/index.html
>> INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
>> Please discuss EV drag racing at NEDRA (
>> http://groups.yahoo.com/group/NEDRA)
>>
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>
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Re: Ego vs Greenworks? 7aH EGO battery?

Electric Vehicle Discussion List mailing list
In reply to this post by Electric Vehicle Discussion List mailing list
My e-mowers have been corded type, so no battery problems.  

However, the replacement motor I put in the B&D was a 36 volt and I ran it
from a 10ah PIng lithium battery that I carried in a backpack, which made
the mower much more maneuverable.  

I ran it that way for 4 seasons, until the motor packed it in from bearing
play that I carelessly didn't recognize until the armature demolished the
magnets.

I think e-mowers in genearal are probably hard on batteries, because they
present large loads on batteries kept small so the mower doesn't get too
heavy or expensive.

With my B&D 36v, the idle motor load - just spinning the blade in open air,
no cutting - was IMO obscenely high, 8+ amps.  I wasn't able to consistently
read the ammeter when cutting, but I had a 20a breaker on the battery, and
it tripped now and again in very heavy grass and when I hit roots.

The battery is LiFePO4, not LiCo.  I don't know whether that makes a
difference in a situation like this, but it held up through the 4 seasons I
used the mower, even though the load was higher than Ping advises (they like
to stay at or below 1C).  

David Roden, EVDL moderator & general lackey

To reach me, don't reply to this message; I won't get it.  Use my
offlist address here : http://evdl.org/help/index.html#supt

= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
     OPTIMIST: The glass is half full.
     PESSIMIST: The glass is half empty.
     REALIST: The glass contains N ml.  Next question?

                                    -- Found on the net
= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =

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