Here is a LiFePO4 site with current single order pricing: http://www.lifebatt.com/LiFeBATT%20Web_4.html
includes BMS and chargers for packs. $2415 for a 24V 40 AH pack ($7245 for a 72V 40AH pack) youch!! My 72V AGM pack @ 55AH has individual 6A chargers, does not require a BMS, and my total with chargers was under $1000. I know, 228 lbs I have to move down the road... Cheers,Jeff On Jan 28, 2008 10:09 AM, Jeffrey Blamey <[EMAIL PROTECTED]> wrote: > Lithium Iron is just now becoming available from a number of sources. > I am not waiting for it to bottom out, just get into a $ range where I > can justify it. The A123 and other varieties of LiPoly, Li Ion, etc. > are nasty chemical mixes, and not environmentally sound. There are > other industrial quality solutions coming onto the market, like the > NILAR NiMH batteries ( www.nilar.com ), which are benign chemically > and will rival the Lithium for charge cycles and low cost. NILAR does > not use cylindrical cells so the space wasted between cylinders is > added capacity. One of NILAR's principals was a key person in the > Optima battery development. > > Moving an object with a motor down a 1/4 mile DS in a few seconds > hardly is the example of a road bike. All you have to do is live near > hills and realize having a 2 speed trans would make EMCs more fun, > and practical. Without a lower gear going up a steep hill with a > single gear (compromise) will a.) eat a good number of amps, and b.) > create a lot of heat in a motor, without adequate cooling lessening > the life of the motor. I have solved the heat problem. The only (sic) > modern bike with a separate tranny is the Harley and that puppy is > heavy, Ebay has 5 speed pulls for $500 +/- but a clutch and pulleys, > linkage will run another $500. Having built a bike with 72V of 55AH > AGMs, and ridden it (commuting) over 1000 miles (in CO) April to > November time-frame, I see little advantage to having spent the $2500+ > for Lithiums, the AGMs ran under $600 with shipping. With modest > discharge levels I expect my EMC pack to last 4 or more years. Lead > has risen in price about 25% this past year which makes lead a worse > deal, but many people on this DL don't have the money to sink into > Lithium (yet). > > I am happy with the AGM performance my next project (3 wheeler) will > have 12 AGMs unless I can scare up a set of NILAR batteries to "test". > > Cheers, Jeff > 84 Honda VF Franken'ceptor > > > On Jan 28, 2008 8:53 AM, Tim Humphrey <[EMAIL PROTECTED]> wrote: > > > > I hear that "when lithium gets cheaper" banter quite a bit. I agree that the > > initial outlay for lithium seems quite expensive and can be hard to justify > > or even obtain. But, if you do the math over the entire lifetime of the > > battery the lithium-iron at todays prices is about the same as flooded lead > > and about 5 times cheaper than sealed lead. Yes, cheaper. > > > > Yeah, I'd like to see lithium get even cheaper and it is headed that way, > > but to buy lead while waiting for lithium to bottom out is just plain silly. > > > > Have you ever mentioned to Bill Dube' that he's not going to win races with > > a single gear ratio? ;-) > > > > > > Stay Charged! > > > > Hump > > > > Ignorance is treatable, with a good prognosis. However, if left untreated, > > it develops into Arrogance, which is often fatal. :-) -- Lee Hart > > > > > > --- On Fri 01/25, Jeffrey Blamey < [EMAIL PROTECTED] > wrote: > > > > From: Jeffrey Blamey [mailto: [EMAIL PROTECTED] > > To: [email protected] > > Date: Fri, 25 Jan 2008 18:24:44 -0700 > > Subject: Re: [ElectricMotorcycles] Goldwing? > > > > > > Unfortunately none of us are going to win races with single gear > > ratio. My next project (hope) will have room for a Harley 5 speed. Our > > nemisis is the range possible with SLA, when Lithium Iron or NiMH type > > batteries get in a reasonable price range we can all switch and our > > bikes will have renewed life (miles) ;-) > > > > Cheers, Jeff > > > > > > > > ________________________________ > > Join Excite! - http://www.excite.com > > The most personalized portal on the Web! >
