Large format lithium cells are getting easier to find, and the prices are not that bad especially for a motorcycle size pack. One important thing to keep in mind is that the pack has to be able to source enough current. If an individual cell cannot, it will need to be paralleled with other cell(s) in order to do so. Small cells cannot source enough current, whether lithium or NIMH so must be paralleled. Here are a couple of sources for large format lithium iron phosphate cells. For about $4000 I could build a pack for my motorcycle that would give me good performance a solid 40 mile range. If I wasn't so focused on my truck, I might be tempted. http://www.electricwheelsinc.com/batteries.shtml http://www.cloudelectric.com/lithium_iron_phosphate?b=1 damon
> Date: Tue, 10 Jun 2008 10:32:58 -0400> From: [EMAIL PROTECTED]> To: > listserv@electricmotorcycles.net> Subject: Re: [ElectricMotorcycles] NiMH> > > I had been thinking between lithium and lead as well. It seems most of > the > lithiums are small cells and require a BMS. So it seemed NiMH > wouldn't be > too much worse (and maybe better) in comparison. I presume > NiMH falls in > between lithium and lead in weight. I don't need a huge > battery pack (so I > think) and the NiMH didn't look to crazy. But there > must be reasons it's > not being used. I figured I'd need 150 cells and if > they have to managed > individually that is a problem.> > Just thinking out loud.> > - SteveS> > > damon henry wrote:> > NIMHs are totally off my radar, because as you said, > the right size > > cells are unobtainable. They are also tough to charge > correctly > > especially when you have to parallel them all together to get > the > > correct size pack. If you want expensive lightweight batteries the > > > clear choice is lithium, especially for a motorcycle. Lugging around > > a > bunch of lead is still the easiest solution with the lowest up front > > > costs.> > > > damon> >> >> >> >> > > ------------------------------------------------------------------------> >> > > > Date: Tue, 10 Jun 2008 09:39:01 -0400> > > From: [EMAIL PROTECTED]> > > > To: listserv@electricmotorcycles.net> > > Subject: [ElectricMotorcycles] > NiMH> > >> > > Pondering batteries for the EM conversion and looking at > NiMHs. It's a> > > shame that the bigger sizes are being held off the market, > but some> > > decent D cells seem to be available with tabs. Price isn't too > awful.> > >> > > I looked thru the EV album and it seems NiMH show up in > scooters/bikes> > > and jumps up in size to the cars (Prii, etc) that use > unobtainable > > cells.> > > So, what's the take on NiMH for a real > street-sized EM ?> > >> > > - SteveS> > > (still working on the BMW > conversion)> > >> >> >> > > ------------------------------------------------------------------------> > > Search that pays you back! Introducing Live Search cashback. Search > > Now! > > > > <http://search.live.com/cashback/?&pkw=form=MIJAAF/publ=HMTGL/crea=srchpaysyouback> > > >> > > ------------------------------------------------------------------------> >> > >> > No virus found in this incoming message.> > Checked by AVG. > > Version: > 8.0.100 / Virus Database: 270.2.0/1494 - Release Date: 6/10/2008 7:22 AM> > > > > _________________________________________________________________ Search that pays you back! Introducing Live Search cashback. http://search.live.com/cashback/?&pkw=form=MIJAAF/publ=HMTGL/crea=srchpaysyouback
