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(ET) Batteries
Whose batteries are they using? AGM's are starting to show up un PV grid
tie/off grid apps a lot more now and I hear Full River (China) are doing
very well. I think Rolls has AGM's now but my system still uses Rolls L/A
batts. Truthfully I'd rather not have L/A's in my ET. Not just the filling
but I'm building one for the lady and AGM's are better for her. No mess and
safe in enclosed spaces. I had to build a special battery box for my PV
system, too cold to keep them outside in the winter and inside means a
venting system to keep fumes out of the basement.
Expensive batteries are a given for electrics today, still better than gas
in my view.
Rob
-----Original Message-----
From: elec-trak-request cosmos phy tufts edu
Sent: Wednesday, January 08, 2014 11:50 AM
To: elec-trak cosmos phy tufts edu
Subject: Elec-trak Digest, Vol 12, Issue 3
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Today's Topics:
1. ET) Cub Cadet RZT-S Zero Electric Lawnmower (Neil Dennis)
2. Re: Cub Cadet RZT-S Zero Electric Lawnmower (David Roden)
3. Re: Elec-trak Digest, Vol 12, Issue 2 (Robert)
4. Cadet Zero (Robert)
5. No-mess batteiries (was Elec-trak Digest, Vol 12, Issue 2)
(David Roden)
6. Re: No-mess batteiries (was Elec-trak Digest, Vol 12, Issue
2) (David Roden)
7. Re: Cub Cadet RZT-S Zero Electric Lawnmower (Ken Olum)
8. Re: Cub Cadet RZT-S Zero Electric Lawnmower (John Jeno)
----------------------------------------------------------------------
Message: 1
Date: Tue, 07 Jan 2014 20:49:31 -0500
From: Neil Dennis <wombatt gmail com>
To: elec-trak cosmos phy tufts edu
Subject: (ET) ET) Cub Cadet RZT-S Zero Electric Lawnmower
Message-ID: <52CCAEAB 7020703 gmail com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
I did a google on it, couple write ups, one said expected price was
$4500. The John Deere electric 90 used 3 marine deep cycle batts (like
$200 for all three) and ran longer then that jobber.
wombat
------------------------------
Message: 2
Date: Tue, 07 Jan 2014 23:52:07 -0500
From: "David Roden" <etpost drmm net>
To: elec-trak cosmos phy tufts edu
Subject: Re: (ET) Cub Cadet RZT-S Zero Electric Lawnmower
Message-ID: <52CC9327 6999 38A7AF44 etpost drmm net>
Content-Type: text/plain; charset=US-ASCII
On 7 Jan 2014 at 17:37, Jeff Antonucci wrote:
With the Golf cart battery solution staring them in the face they must
have a compelling reason not to use them. Cost? Maintenance?
Not cost, that's for sure, but lack of maintenance makes sense. How often
do you water the battery in your mobile phone or laptop? I'd guess that
they think (or maybe even know from surveys) that users expect the same
plug-
and-forget behavior in this mower.
Besides, how many owners do the required maintenance on their ICE mowers?
Do you really think they'd want to check batteries?
I just hope the charger supplied takes good care of those pricey batteries.
Outdoor power equipment manufacturers don't have a very good record in that
area. No, scratch that. Indoor or outdoor, almost _every_ rechargeable
gadget's charger murders its battery.
David Roden - Akron, Ohio, USA
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------------------------------
Message: 3
Date: Wed, 8 Jan 2014 09:45:45 -0500
From: "Robert" <euclid delhitel net>
To: <elec-trak cosmos phy tufts edu>
Subject: Re: (ET) Elec-trak Digest, Vol 12, Issue 2
Message-ID: <EAC0065EDD644A5B8A35F93AFD5F626F@RobaroniHP>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Geo, you make some good points about acreage with the ET. In fact I'm
thinking about using Full River AGM's in my restore 12V at 105aH and not 6
L/A 105's. I know I'll get less run time but I only have about an acre to
mow. I asked the Cadet Zero dealer for pricing (email him), he beat around
the bush and never gave a price or the type of batteries the Cadet uses.
I'm
not sure of the hold up quality of the Cadet either. I've heard they aren't
made the way they used to be.
-----Original Message-----
From: elec-trak-request cosmos phy tufts edu
Sent: Tuesday, January 07, 2014 7:27 PM
To: elec-trak cosmos phy tufts edu
Subject: Elec-trak Digest, Vol 12, Issue 2
Send Elec-trak mailing list submissions to
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When replying, please edit your Subject line so it is more specific
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Today's Topics:
1. Re: Cub Cadet RZT-S Zero Electric Lawnmower (Reo43 aol com)
2. Re: Cub Cadet RZT-S Zero Electric Lawnmower (George Beckett)
3. Re: Cub Cadet RZT-S Zero Electric Lawnmower (Jeff Antonucci)
4. Re: Cub Cadet RZT-S Zero Electric Lawnmower (Tim Faulhaber)
----------------------------------------------------------------------
Message: 1
Date: Tue, 7 Jan 2014 15:10:33 -0500 (EST)
From: Reo43 aol com
To: elec-trak cosmos phy tufts edu
Subject: Re: (ET) Cub Cadet RZT-S Zero Electric Lawnmower
Message-ID: <75077 16298dc8 3ffdb939 aol com>
Content-Type: text/plain; charset="US-ASCII"
Looks good. There is a good advertising video on Youtube at :
http://youtu.be/TdqLy2Irp4k.
Their advertising is very similar to the Elec-Trak ads - big hoopla about
"quiet - no gas - no belts - mows for pennies a day - etc", and not a word
about the batteries and what it costs to replace them. That is probably
why
so many Elec-Traks were only used for several years - until the owner had
to shell out for new batteries.
Erv Troyer
=============================
On Tue, 7 Jan 2014 11:32:08 -0500 Jeffrey Tickner
<jeff tickner gmail com> writes:
Subject: (ET) Cub Cadet RZT-S Zero Electric Lawnmower
Posted on wired.com from CES, they say it will cost $4K or $1100 more then
the comparable gas engine model
http://cubcadetrztszero.com
------------------------------
Message: 2
Date: Tue, 7 Jan 2014 16:04:22 -0500
From: George Beckett <irishbeckett hotmail com>
To: "Reo43 aol com" <reo43 aol com>, "elec-trak cosmos phy tufts edu"
<elec-trak cosmos phy tufts edu>
Subject: Re: (ET) Cub Cadet RZT-S Zero Electric Lawnmower
Message-ID: <SNT149-W156D0D083058F877B1858FCCB60 phx gbl>
Content-Type: text/plain; charset="iso-8859-1"
Nice looking machine, but I continue to be disappointed over the run-time
of
modern electrics (Hustler Zeon is the same). This is a one acre machine.
Seems hard to believe you would really need a zero-turn mower for a one
acre
yard front and back. You are not going to use this on a large yard or in a
commercial lawn business. A 40 year old Elec-Trak with the Aux. Power
Pack
Booster (AP84) on it was advertised at nearly 5 acres- my experience is
about 3 1/2 but all the same that's 3+ recharges on the Cub or Hustler.
Also with zero-turns the lack of attachments stands-out. I'll stick with
Ole Yella' for now. : )
http://www.hustlerturf.com/products/zeon.html
http://www.myelec-traks.com/GEH-4018.pdf
George "Geo" Beckett
------------------------------
Message: 4
Date: Wed, 8 Jan 2014 10:16:34 -0500
From: "Robert" <euclid delhitel net>
To: <elec-trak cosmos phy tufts edu>
Subject: (ET) Cadet Zero
Message-ID: <FE0DD4C7F0EA4091999D7B88C44682F1@RobaroniHP>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
reply-type=original
Pushed the dealer for a ball park:
$3999.00 uses AGM batts.
------------------------------
Message: 5
Date: Wed, 08 Jan 2014 11:24:23 -0500
From: "David Roden" <etpost drmm net>
To: <elec-trak cosmos phy tufts edu>
Subject: (ET) No-mess batteiries (was Elec-trak Digest, Vol 12, Issue
2)
Message-ID: <52CD3567 13747 3B217BA5 etpost drmm net>
Content-Type: text/plain; charset=US-ASCII
On 8 Jan 2014 at 9:45, Robert wrote:
I'm thinking about using Full River AGM's in my restore 12V at 105aH
and not 6 L/A 105's.
I've been using East Penn Deka Dominator gel batteries in my E15 as long as
I've had it (1998?). These batteries have a reputation for long life.
Mine
are just now starting to decline in capacity, but they're still good enough
for my needs so far.
I use six 12v group 24s in series-parallel, but EP makes a golf car sized
gel battery. It's the 8GGC2. Capacity is significantly lower than a
flooded battery, 180ah and 92 minutes at 75 amps, so make sure that's
enough
for you.
Note that I'm talking here about East Penn's gel batteries, which use a
design licensed from Sonnenschein. I don't have direct experience with
their AGMs, but I seem to recall hearing that they don't last as long.
http://www.dekabatteries.com/assets/base/0909.pdf
David Roden - Akron, Ohio, USA
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me a private message, please use the address shown at the bottom
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------------------------------
Message: 6
Date: Wed, 08 Jan 2014 12:28:59 -0500
From: "David Roden" <etpost drmm net>
To: <elec-trak cosmos phy tufts edu>
Subject: Re: (ET) No-mess batteiries (was Elec-trak Digest, Vol 12,
Issue 2)
Message-ID: <52CD448B 31799 3B5C9D19 etpost drmm net>
Content-Type: text/plain; charset=US-ASCII
On 8 Jan 2014 at 11:24, David Roden wrote:
I've been using East Penn Deka Dominator gel batteries in my E15 as long
as
I've had it (1998?).
I forgot to mention that you shouldn't charge these (or any battery other
than flooded lead acid) with the GE charger. Yes, I know that at least one
person is using it for flooded NiCd batteries, but I still don't recommend
that.
Using the GE charger for gel batteries is apt to murder them in short
order.
You need to limit finishing voltage to between 42.3 and 42.9 volts. I
charge mine with 3 individual 12v automatic chargers.
David Roden - Akron, Ohio, USA
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Note: mail sent to the "etpost" address will not reach me. To send
me a private message, please use the address shown at the bottom
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------------------------------
Message: 7
Date: Wed, 08 Jan 2014 11:40:53 -0500
From: Ken Olum <kdo cosmos phy tufts edu>
To: elec-trak cosmos phy tufts edu
Subject: Re: (ET) Cub Cadet RZT-S Zero Electric Lawnmower
Message-ID: <q52vbxujuju fsf cosmos phy tufts edu>
Content-Type: text/plain
I converted my Electric Ox to use 4x12V 135Ah AGMs from Universal
Battery. Why? I hate acid mist. It corrodes everything.
Much as I love Deka gels, I felt they wouldn't do in this application
because of the snowblower, which has an unregulated motor, so there is a
huge current every time you switch it on. I didn't think gels would
survive very long. David, do you have a snowblower on your E15?
After 5 years, my range has decreased significantly, but I can still mow
my whole lawn (3/4 acre or so) on a charge.
For the Cub Cadet, I think sealed batteries are a reasonable choice,
although for mowing it seems like gel would have been better, as David
said. That's all providing that they chose high-quality batteries and
used a proper charger. If not, they won't last, and the Cub Cadet will
end up with a lot of angry customers and a bad reputation.
Robert, if you go with Full River, please post a report on how they do.
I thought about Full River for mine, but I couldn't find anyone at the
time who knew whether this was a trustworthy battery or not, so I went
with Universal even at higher expense.
Ken
------------------------------
Message: 8
Date: Wed, 8 Jan 2014 10:50:39 -0600
From: John Jeno <jjjeno hotmail com>
To: Ken Olum <kdo cosmos phy tufts edu>
Cc: "elec-trak cosmos phy tufts edu" <elec-trak cosmos phy tufts edu>
Subject: Re: (ET) Cub Cadet RZT-S Zero Electric Lawnmower
Message-ID: <COL401-EAS893685F95AD1E77AD02441C1B10 phx gbl>
Content-Type: text/plain; charset="us-ascii"
Are the drive motors available as replacement parts yet?
I'm looking to go up to 48v with an Altrax.
Sent from my iPad
On Jan 8, 2014, at 10:42 AM, "Ken Olum" <kdo cosmos phy tufts edu> wrote:
I converted my Electric Ox to use 4x12V 135Ah AGMs from Universal
Battery. Why? I hate acid mist. It corrodes everything.
Much as I love Deka gels, I felt they wouldn't do in this application
because of the snowblower, which has an unregulated motor, so there is a
huge current every time you switch it on. I didn't think gels would
survive very long. David, do you have a snowblower on your E15?
After 5 years, my range has decreased significantly, but I can still mow
my whole lawn (3/4 acre or so) on a charge.
For the Cub Cadet, I think sealed batteries are a reasonable choice,
although for mowing it seems like gel would have been better, as David
said. That's all providing that they chose high-quality batteries and
used a proper charger. If not, they won't last, and the Cub Cadet will
end up with a lot of angry customers and a bad reputation.
Robert, if you go with Full River, please post a report on how they do.
I thought about Full River for mine, but I couldn't find anyone at the
time who knew whether this was a trustworthy battery or not, so I went
with Universal even at higher expense.
Ken
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