Let us know how that works out. I'm skeptical that these batteries have enough ooomph to keep you happy at only 44 volts. They claim a continous rating of 270 and max of 450 amps, but all their capacity and lifecycle testing is done at 30 amps, so you may find at the higher rates they don't give you the range or longevity you are hoping for. If I were going to use these batteries I would either go with a higher voltage pack or a larger capacity cell where I was not using them so close to their claimed limitations.
Also, what do you have planned for charging and BMS? I don't think these cells hold up well to over or under voltage conditions. You will want to protect your investment. If they do work out, I agree with you, you are getting a lot for your money. I am sticking with my NiCads for now, but am planning on moving to lithium on both my motorcycle and truck when it looks like there are some proven options available so I will be quite interested in your results. damon > Date: Sat, 15 Sep 2007 09:01:38 +0200 > From: [EMAIL PROTECTED] > To: [email protected] > Subject: Re: [ElectricMotorcycles] 91 Ninja cycle conversion questions > > Have you considered lithium batteries? Their prices keep dropping and > dropping, and are now into a range where most calculations I see show > lithium as being cheaper in the long run than lead-acid, due to higher > durability. My thinking is that if I'm going to pay the same thing in > the long run, I might as well start with the better batteries. They're > lighter and more compact, so should be a lot easier than lead-acid and > give you much better mileage for the same Ahr rating. > > The batteries I'm ordering for my project are 90Ahr LFP batteries from > ThunderSky. 14 of them is enough for my 48V project, giving 4.3kWhr > for only 42kg and $2500 + shipping. You can check out their selection > from the American distributor here: > > http://www.everspring.net/txt/product-battery-pricing.htm > > However, one thing to add is that ThunderSky experiences have been > very... mixed. Your mileage may vary in the most literal of senses. > I've heard enough good things about them that I'm willing to tempt > fate, but then again I'm on a research budget so I can always buy more > from a different supplier if the batteries they deliver aren't good. > If you do decide to go with them, put off the battery purchase until > the bike is ready, as with the 90-day warranty you don't get much time > to check them out for defects. > > Best of luck, > Kenn Sebesta > >> Date: Fri, 14 Sep 2007 11:10:24 -0700 >> From: "Robert Smith" >> Subject: [ElectricMotorcycles] 91 Ninja cycle conversion questions >> To: [email protected] >> Message-ID: >> >> Content-Type: text/plain; charset="iso-8859-1" >> >> Hi all, >> I just subscribed at the suggestion of someone on my EV miallist. EV list >> was very helpful, but thought it would be good to pick some of your brains >> here. >> >> I am starting on my first EV project. My son and I are converting a >> 1991 Ninja motorcycle. Lead batteries are planned, but I am curious >> of the advancement and availablitiy of LiIon, NiCad, etc.. and wonder if I >> should go a different >> route. Goals are to have a speed about about 50mph and a range of 20 or >> more. It's a first bike for riding in 15 years as well. Been itching for a >> motorcycle for the past two summers! >> >> In thinking about this conversion, what specs are important? >> >> Thnaks > _________________________________________________________________ Capture your memories in an online journal! http://www.reallivemoms.com?ocid=TXT_TAGHM&loc=us
