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Messages 84773 - 84802 of 84802   Oldest  |  < Older  |  Newer >  |  Newest
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84773
... Cutting through the jargon and marketing tripe here, what I read is that there is enough BMS involved to float a battleship. Thus it is inaccurate to say...
chalocolina
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Nov 9, 2009
8:20 pm
84774
What other LiFePO4 or Lithium-ion rechargeable battery company do you know, Chalo, that provides a more complete line of Plug & Play Battery Packs "off - the -...
Don Harmon
harmon_don
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Nov 9, 2009
8:29 pm
84775
All I remember was David Lalonde going on and on and on about how a BMS is only needed for the charging/cell balancing stage and you don't need no steenkin BMS...
evsolutions
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Nov 9, 2009
8:33 pm
84776
Motor controllers have a Low Voltage Cutoff built in to protect older battery chemistries from being damaged. IF you didn't have that LV cutoff in your...
evsolutions
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Nov 9, 2009
8:50 pm
84777
You are all talking about "a battery pack" meaning a single pack of X amount of cells. When you build large scale battery systems consisting of 20 -50 battery...
Don Harmon
harmon_don
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Nov 9, 2009
8:53 pm
84778
... I don't know, and I'm not sure whether it matters. I have no problem with BMS per se, as long as it's cost-effective and doesn't spend too much of the...
chalocolina
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Nov 9, 2009
9:11 pm
84779
Exactly - Only people like AndersonJ want to argue this point. Theoretically it's possible on a Cell level, like Joshua has already pointed out. Realistically...
Don Harmon
harmon_don
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Nov 9, 2009
9:26 pm
84780
The BPM doesn't limit DOD, it responds to the VMS TTL signal, which is programmed in the VMS firmware. A well balanced LiFeBATT pack should give 100% capacity,...
Don Harmon
harmon_don
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Nov 9, 2009
9:46 pm
84781
Realistically it is a fool's errand to try and achieve 100% DOD. But ... Here is a quote from your post on November 8 A LiFeBATT battery pack or packs can go...
andrsnj1
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Nov 9, 2009
10:05 pm
84782
Sorry, I should have used the word "capacity" (100% of capacity) ! Sorry if I confused you? Don From: power-assist@yahoogroups.com...
Don Harmon
harmon_don
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Nov 9, 2009
10:23 pm
84783
Harmon keeps referring to multiple packs whereas everyone else here refers to multiple cells that when combined form a single pack. Gets confusing sometimes. ...
evsolutions
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Nov 9, 2009
10:25 pm
84784
That's true. Single Pack doesn't need a BPM. LVC can be built-in to single pack. Multiple packs need a cat herder (BPM). Also a BPM is not a substitute for...
Don Harmon
harmon_don
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Nov 9, 2009
10:31 pm
84785
... It was not you but Joshua who said that 100% discharge could be done with LiFePO4 packs, and andrsnj1 who said that it should be standard operating...
chalocolina
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Nov 9, 2009
11:45 pm
84786
Thanks Chalo - we finally meet on a common ground ! J Don From: power-assist@yahoogroups.com [mailto:power-assist@yahoogroups.com] On Behalf Of chalocolina ...
Don Harmon
harmon_don
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Nov 9, 2009
11:50 pm
84787
All rechargable battery chemistries have an operating voltage range.. and all are damaged if over-discharged. LiFePo4 cells are fully charged when up to 3.6v...
G Daigle
buzz48v
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Nov 10, 2009
12:08 am
84788
... Ok. Then what is the maximum amp hours that I can get out of your "10 ah" cell/pack with your low voltage cut-off and your cat herder while discharging to...
andrsnj1
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Nov 10, 2009
1:31 am
84789
You really don't want to get into a *John Schuyler* kind of thing here by quoting old posts from someone who sounds like they're singing a *new* tune now do...
robbiehatfield
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Nov 10, 2009
1:52 am
84790
I'm just asking simple questions, and getting evasive answers. This just re-inforces my decision to build a smoke belcher. Who is John Schuyler? I'm not...
andrsnj1
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Nov 10, 2009
12:46 pm
84791
Dear people, I have thought a little improvement for my SLA batteries: Connect in parallel with them a large-capacity electrolytic capacitor, let's say 5000 uf...
Marcelo S
marcelo_shulman
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Nov 10, 2009
12:46 pm
84792
... It's impossible to imagine people voluntarily limiting themselves to 200w. It's much easier to imagine governments limiting them to 200w, which is what...
Dan Sullivan
dansullivan0
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Nov 10, 2009
12:48 pm
84793
... I just threaded the sprocket on, using the highest strength thread locker I could find, followed by the lock ring, making it as tight as I could without...
Dan Sullivan
dansullivan0
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Nov 10, 2009
12:50 pm
84794
Select a battery pack that can satisfy your longest anticipated range with a DOD down to 40% *meaning you've used 60% of the rated capacity*. By doing this,...
robbiehatfield
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Nov 10, 2009
12:51 pm
84795
... On Novermber 9, a post from November 8 was an old post? Seriously? -ds...
Dan Sullivan
dansullivan0
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Nov 10, 2009
12:53 pm
84796
John Schuyler was a guy who loved to spend all day searching archives to find contradictary posts made by current enemies that he could throw back in their...
robbiehatfield
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Nov 10, 2009
12:59 pm
84797
The point is that just about everyone contradicts themselves. It's no great feat to search out older posts from yesterday, last week, or last year to prove it....
robbiehatfield
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Nov 10, 2009
1:00 pm
84798
Schuyler made Randy Draper look absolutely normal. joshua goldberg evsolutions@... www.evsolutions.net http://groups.yahoo.com/groups/e-motor-assist ...
evsolutions
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Nov 10, 2009
1:48 pm
84799
You'd think that (I did too) but the Europeans/Brits have this strange need to obey the Law. Best I can figure is the Importers follow the 250W Legislation and...
evsolutions
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Nov 10, 2009
1:57 pm
84800
It's actually not that hard to understand. A good number of the people in Europe today are the descendants of those that could stay and follow the rules. A...
robbiehatfield
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Nov 10, 2009
2:50 pm
84801
Does anyone in the group have experience with Kalkhoff pedelecs? Durability? Ridability? Availability? Thanks....
exhaustopenic
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4:45 am
84802
Dan, Are you using a rear hub Crystalyte 408 motor to drive the crank? All my seies 400 motors are front wheel drive. I will have to find a way to modify a...
gerhardtdon
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4:51 am
Messages 84773 - 84802 of 84802   Oldest  |  < Older  |  Newer >  |  Newest
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