I just wanted to know if anyone out there has this bike and has actually driven
it over 100 miles. I've taken a picture of the batteries in this bike and am
wondering if these are the same ups batteries used in the XM-2000 bikes that
have already failed. I've got 25 cycles on these batteries and range is half of
what it was when the bike was new. Would really appreciate any data anyone can give
me.
These do resemble the greensavers, do they not? I'd hate to have to rip the bike all apart
to find out for sure. Even though I'm gonna have to do that anyway if I ever want
to use it for anything useful.
Thanks
I ripped this bike apart last week because the range is now quite horrible. 10 miles, from 27 when the bike was new. I've got almost 600 miles on it now. The upside of the batteries is that they perform excellent in the cold. I'm really curious why the range doesn't hold on them for long. Here is what they look like.
Now, the next feat is to find a battery that will fit on this bike that isn't going to run me 3k. I've looked at the optima's, from what I've read they handle the C/1 rate and cold abuse. They are cheap on top of that. The dimensions on these are 7x3x6.75 in case anyone out there has the same problem.
The bottom battery case on this bike is 13x9x7.75 and the back space is 9x7x7. I can see this is going to require a bit of hacking on my part.
They might be cheap UPS batteries. That 20AH rating is usually given with spongy plates. Proper deep cycle ones are around 17-18AH.
Oh wait. They're silicone. Greensaver ripoffs no less. Nuff said. Ouch.
If I were you I'd slice one in half to see if they have solid plates. Just for the hell of it. But that's just me ;).
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Here is the default battery configuration of this bike as well. There is a missing 5th battery here I had removed to weigh. 15.2 lbs each. So much for the "green" image.
And 3 in back hooked to the rear brake lights.
Replacements the easy way, These should fit perfectly:
http://www.odysseybatteries.com/battery/pc680.htm
These are the only batteries I could find data on for EV usage. These and the yellow cap optima batteries which wont fit in this bike without destroying the battery compartment.
Capatteries and similiar supercaps will only give you a couple amps at most with what is available today. There is nothing else to use other than building a pack from nimh cells.
That's it. Cap's would be sweet if they could store more WH.
"Capatteries and similiar supercaps will only give you a couple amps at most with what is available today."
Watchoo talkin' bout Bruce?
I've got a 2.5V Aerogel cap in my room with a 80mOhm internal resistance. Should be good for 30A (for the upper end of its charge), and it's smaller than a sub-C battery. Not the best but still.
It cost me almost 20$, though. Wonder what that is in $/Whr. Lets find out.
E = C/2 * V^2 so
E = 25 * 6.25
E = 156.25J
A joule is a watt-second. So we have 2 1/2 watt-minutes of power. 2.5 / 60 = 0.042Whrs. 20 / 0.042 =
$476Whr.
I want my money back ;).
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