E-Motorcycle battery source

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E-Motorcycle battery source

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Good evening (or morning, depending on where you are),

I'm looking for a source for 48v batteries for an E-Motorcycle project I'm going to work on this winter. I would prefer some form of Lithium chemistry battery, with somewhere between 20 and 40 kWh capacity. Any suggestions?

Matthew Pitts


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Re: E-Motorcycle battery source

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On 5 Sep 2019 at 21:41, Matthew Pitts via EV wrote:

> I'm looking for a source for 48v batteries for an E-Motorcycle project I'm
> going to work on this winter.

I've bought 3 LiFePO4 batteries from Ping Battery.  They weren't cheap, but
I've been pretty satisfied with all of the batteries so far.  Two of them
are from 2011, and when I last tested them late in 2017, they were at 93% of
rated capacity.  

In the deficit column, 2 of the chargers Ping supplied with the batteries
have failed.  

David Roden - Akron, Ohio, USA
EVDL Administrator

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Re: E-Motorcycle battery source

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20 to 40 kWh! Just where are you going to put that many batteries?


On 9/5/2019 9:41 PM, Matthew Pitts via EV wrote:
> Good evening (or morning, depending on where you are),
>
> I'm looking for a source for 48v batteries for an E-Motorcycle project I'm going to work on this winter. I would prefer some form of Lithium chemistry battery, with somewhere between 20 and 40 kWh capacity. Any suggestions?
>
> Matthew Pitts
>
>
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Re: E-Motorcycle battery source

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On 5 Sep 2019 at 23:10, Alan Arrison via EV wrote:

> 20 to 40 kWh! Just where are you going to put that many batteries?

Yikes.  I assumed he meant amp-hours.  If it's really kWh, it's a car-size
battery.  That's going to be quite a challenge to haul around on a bike.

David Roden - Akron, Ohio, USA
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Re: E-Motorcycle battery source

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On 9/5/19 11:10 PM, Alan Arrison via EV wrote:
> 20 to 40 kWh! Just where are you going to put that many batteries?

That was my initial thought as well.

To give you an idea, a Nissan Leaf battery pack is 24 kWh, and consists
of 48 battery modules. You could certainly wire up a ~48 volt pack using
a 7S6P configuration of 42 modules (21 kWh, 58 volts max) or a 6S8P
configuration using all 48 modules (24 kWh, 50 volts max), but that
amount of batteries fills the space between frame rails in the back of
my truck, so you had better have a BIG motorcycle.

http://evalbum.com/popupimg.php?26972

http://evalbum.com/3693

Jay
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Re: E-Motorcycle battery source

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On 9/6/19 2:29 AM, EVDL Administrator via EV wrote:
> On 5 Sep 2019 at 23:10, Alan Arrison via EV wrote:
>
>> 20 to 40 kWh! Just where are you going to put that many batteries?
>
> Yikes.  I assumed he meant amp-hours.  

Well, if he wants a 60 AH battery, he could make it out of 6 or 7 Nissan
Leaf modules in series and that would be of a reasonable size to carry
around in a larger bike....

Photo of 6 leaf modules packaged together:
https://www.summet.com/blog/wp-content/uploads/2015/09/IMG_20151018_175423.jpg

Jay

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Re: E-Motorcycle battery source

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If it's a production bike and 48v,  chances are it's relatively low power.

My Vectrix is 140v nominal with 18 x leaf modules.
It is possible to fit 135Ah of nmc cells  at  140v or so for around 19kwh.
This is a big bike purpose built to be electric.


⁣Sent from BlueMail ​

On 6 Sep. 2019, 18:39, at 18:39, Jay Summet via EV <[hidden email]> wrote:

>
>
>On 9/6/19 2:29 AM, EVDL Administrator via EV wrote:
>> On 5 Sep 2019 at 23:10, Alan Arrison via EV wrote:
>>
>>> 20 to 40 kWh! Just where are you going to put that many batteries?
>>
>> Yikes.  I assumed he meant amp-hours.  
>
>Well, if he wants a 60 AH battery, he could make it out of 6 or 7
>Nissan
>Leaf modules in series and that would be of a reasonable size to carry
>around in a larger bike....
>
>Photo of 6 leaf modules packaged together:
>https://www.summet.com/blog/wp-content/uploads/2015/09/IMG_20151018_175423.jpg
>
>Jay
>
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>(http://groups.yahoo.com/group/NEDRA)
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Re: E-Motorcycle battery source

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          Hi Mathew and All,              That will be hard and your only real choice is Tesla 5kwh, 24vdc modules as the only ones compact, light enough to put 20kwh in a MC at a reasonable price, about $200/kwh.   Others are heavier, more space.  Think about running them at 96vdc though for more power, etc.           If you need more, a single wheel aero trailer with very low CG could work.  Or a 2wh ultralight aero micro camper, etc.            Having built a longer, 72"  wheelbase low CG streamliner rolling chassis test mule to check handling, etc , it quickly became apparent they would be the only choice for space reasons.               So I'm waiting to afford  20kwh of them for a 200 mile range Streamliner is all that is holding me back.              Which is too bad as I have 20kwh of Volt modules but too much space, double the weight of Tesla modules.  Great for my 3wh EVs though.   ;^)               Leaf modules while look good are heavier, more space in this case  and you have to watch how much capacity they have left, which increases their space, weight/kwh, the lower the capacity is.              Understand regular MC tires have 4x the drag of EV tires.  Luckily the rear can be replaced with a car EV tire, 14" car equals a 17" MC IIRC and overpressure, maybe a tire lathe  to round out some.                And the front can be selected and run at high pressure.  These can over double your range as I found out on the test mule with both normal MC tires, power required was very bad. Much worse than much larger subcars I build/t..              And nothing as cheaply can do more for MC range than a good aero fairing can double your range at 65mph.  All these are much cheaper than more batteries.  In EVs it is the details that count and best way to increase performance at lower cost or even make it possible in your case, is lowering the drag first.            Jerry Dycus     On Friday, September 6, 2019, 01:41:28 AM UTC, Matthew Pitts via EV <[hidden email]> wrote:  
 
 Good evening (or morning, depending on where you are),

I'm looking for a source for 48v batteries for an E-Motorcycle project I'm going to work on this winter. I would prefer some form of Lithium chemistry battery, with somewhere between 20 and 40 kWh capacity. Any suggestions?

Matthew Pitts


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Re: E-Motorcycle battery source

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"I would prefer some form of Lithium chemistry battery, with somewhere
between 20 and 40 kWh capacity."

You'd "prefer" a Lithium chemistry?

Nothing else currently available is going to give you a battery of
that capacity that will fit on a 2 wheeled vehicle.

That's a very large capacity battery. Even at 20kWh pretty much
cutting edge energy density for a conventional motorcycle. What would
your size and weight restrictions be?

On Fri, 6 Sep 2019 at 02:41, Matthew Pitts via EV <[hidden email]> wrote:

>
> Good evening (or morning, depending on where you are),
>
> I'm looking for a source for 48v batteries for an E-Motorcycle project I'm going to work on this winter. I would prefer some form of Lithium chemistry battery, with somewhere between 20 and 40 kWh capacity. Any suggestions?
>
> Matthew Pitts
>
>
> --
> Sent from my Android device with K-9 Mail. Please excuse my brevity.
> _______________________________________________
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>


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Re: E-Motorcycle battery source

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In reply to this post by Electric Vehicle Discussion List mailing list
I have 16 (well now 15 as one died) Calb 60 AH cells in my motorcycle.  http://evalbum.com/497
I bought the cells from a local source, but they are not too hard to come by,  at least they were not last time I was in the market.

Damon
________________________________
From: EV <[hidden email]> on behalf of Matthew Pitts via EV <[hidden email]>
Sent: Thursday, September 5, 2019 6:41 PM
To: [hidden email] <[hidden email]>
Cc: Matthew Pitts <[hidden email]>
Subject: [EVDL] E-Motorcycle battery source

Good evening (or morning, depending on where you are),

I'm looking for a source for 48v batteries for an E-Motorcycle project I'm going to work on this winter. I would prefer some form of Lithium chemistry battery, with somewhere between 20 and 40 kWh capacity. Any suggestions?

Matthew Pitts


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Sent from my Android device with K-9 Mail. Please excuse my brevity.
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