I have a cordless BD that i changed out to use 24v 20ah thundersky batts a
few seasons ago and shared the battery for a while on my recumbent for
assist. It certainly won't do my new 2+ acres but was cheap with dead
batteries off of craigslist and the lighter batteries made it tolerable to
push
I didn't get the BMS as I stated in my first message. The experience I
have with no BMS on my Gizmo for the past couple of years and the fact
that this is a pack of 4 cells each that are accessible means that I'm
confident I don't need an electronic BMS.
you made holes in the plastic case to
Craigslist brought me a BD CMM1200 which seems to be quite a hoss at
1200W. 24V. Bagger/mulcher, 1.5A charger.
EVDL Administrator wrote:
Good find! Note that 1200 watts ispeak - ask those little gel batteries
to deliver 50 amps for more than a few seconds and see how far they get you!
Unless
What sort of RPM does a mower use? The corded electric Mountfield we use does
not appear to have a gearbox. So, would a 36/48V cordless circular saw be a
possible starting point (if there is such a beast!)? It'd certainly make
battery swapping very easy! MW
On 28 Apr 2014, at 17:58,
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(919) 513-0418 Desk
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/voice/b/0?pli=1#phones Google Phone
(919) 631-1451 Cell
(919) 513-0418 Desk
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For EV drag racing discussion, please use NEDRA
(http://groups.yahoo.com/group/NEDRA)
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On 29 Apr 2014 at 10:53, Michael Ross wrote:
I am a lead acid dunce. Can I imitate a smart charger with the Amrel
power supply?
Are there different protocols for conventional, AGM and Gel? I assume so.
Here is a good introduction to lead battery charging:
Michael Ross wrote:
I have an Amrel programmable power supply 4A, 60V. Very handy for Li-ion.
I am a lead acid dunce. Can I imitate a smart charger with the Amrel
power supply?
Yes, if you supply the smarts (i.e. manually control it).
Are there different protocols for conventional, AGM and
On 29 Apr 2014 at 12:48, EVDL Administrator wrote:
simple cycle-dropping charge controller ...
On further thought, somthing occurs to me - I don't think this circuit will
work properly with a filtered DC input (as from a bench supply). Maybe a
real EE (I'm just a hacker) will weigh in.
Michael Ross wrote:
I see AGM BP17-12 at amazon prime for $42. Hard to think of putting in Li
for that cost.
Presumably, all AGM are not created equal - how does one tell good from bad?
Price, and weight are the best indicator. The heavier the battery, the
more lead in it. The more lead,
On 29 Apr 2014 at 12:06, Lee Hart wrote:
I have Enersys, Hawker, and Concorde AGMs that are now over 10 years old
and still delivering at least half of their original capacity. I also have
Gates, and Deka gels just as old that are still usable.
I just recently retired the last of a batch of
Desk
michael.e.r...@gmail.com
michael.e.r...@gmail.com
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EVDL Administrator wrote:
simple cycle-dropping charge controller ...
On further thought, somthing occurs to me - I don't think this circuit will
work properly with a filtered DC input (as from a bench supply). Maybe a
real EE (I'm just a hacker) will weigh in.
Yeah, that's an AC-only
Michael Ross wrote:
Are there non-rape and pillage suppliers for the higher quality gels and
AGM?
Well, I'm cheap. I generally buy my batteries as far away from retail as
I can get. :-)
Sometimes it's a negotiated price for a quantity purchase. Battery
dealers have a *large* margin, and so
-1451 Cell
(919) 513-0418 Desk
michael.e.r...@gmail.com
michael.e.r...@gmail.com
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Michael Ross wrote:
my power supply allows me to tell it a peak current and peak voltage...
It sounds like I can safely set the voltage to 28.8V and 4 amps, and
not be concerned if I forget for a few days. Do I have that right?
What is the amphour capacity of your batteries? 28.2v and 4a is
Sadly, I can't enter - open to residents of U.S. only.
http://www.ebay.com/motors/garage
Contest ends May 16th.
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http://www.clickgreen.org.uk/news/national-news/124515-rac-fits-first-patrol-with-emergency-mobile-ev-charging-unit--.html
RAC fits first patrol with emergency mobile EV charging unit
24 Apr 2014
[image
Michael Ross wrote:
Any idea if a 24V 1200W mower is a high current application? I am not
sure if I know what high and low mean in this context.
It's considered a high current application. You will probably size
your batteries so they get discharged in under an hour.
Is this where Li
#phones Google Phone
(919) 631-1451 Cell
(919) 513-0418 Desk
michael.e.r...@gmail.com
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a new pack in but I don't. Lawrence
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It let me enter my Electric Vehicle! (Of course, it's a Ford F-250...)
On Tue Apr 29 12:35:15 PDT 2014 c...@calfrye.com said:
And it won't let me enter my GEM vehicles at all!
- Cal Frye
Darryl McMahon mailto:dar...@econogics.com
April 29, 2014 2:26 PM
Sadly, I can't enter - open to
I went to enter my Ford C-Max Energi but it wouldn't let me...apparently
I'd already registered it there back in the mists of time. I don't know
how long the garage feature has been around. I'm sure I did it I just
don't remember when.
But I added the Smart ED and the Ford Ranger EV and it
On Tue Apr 29 13:30:30 PDT 2014 r...@beebe.org said:
I went to enter my Ford C-Max Energi but it wouldn't let me...apparently
I'd already registered it there back in the mists of time. I don't know
how long the garage feature has been around. I'm sure I did it I just
don't remember when.
Wonder
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pack
in but I don't. Lawrence
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