what would 9Ah and 312v of D cell NiMH get you? A ~100lb pack, 15kW continuous, maybe 30kw peak? A single string. Not my favorite option for a motorcycle, but doable. Of course I have written many times about paralleling 9Ah D cells with good results. It can be done.
Seth On Tue, Jun 10, 2008 at 10:32 AM, SteveS <[EMAIL PROTECTED]> wrote: > 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 >> >> > > >
