Ni-Cad Battery Packs latest...?

[29a]

The exact same thing can be said for LiFePO cells. And they have a much greater cycle life than NiCd. Plus they are a lot more environmentally friendly. And a lot lighter. And less filling.

Not at -30 c

 

[trappermike]

I have been looking at Sanyo's website,they now offer a "Cadnica Extra" series high-capacity Ni-Cad cells,most likely the best made. I'm thinking of purchasing the cells,but I don't know offhand of any Company in Canada than can properly assemble(Spotweld) the pack together properly,I don't want to try soldering or spot-welding(Frying them either way) them together myself at home.
Anyone know of a place in Canada that can properly assemble them?
I also need to know how many cells are needed to build a 36v-8ah pack,and what size cells are used?
Yes I'm old and stubborn,and I'm determined to install a 72v-8ah Ni-Cad pack in my bike next,no matter what it takes....

 

[Andje]

I also need to know how many cells are needed to build a 36v-8ah pack,and what size cells are used?

for someone asking for that much advice, seriously consider going lipo since that's definitely the advice everyones offering...

 

[el_walto]

I really don't know if you are any better off with NiCad. See here: http://endless-sphere.com/forums/viewtopic.php?f=14&t=23105

 

[trappermike]

El_Walto,I read the link you just suggested and it basically reinforces my opinion.In the second comment posted by Ypedal he notes that the Ni-Cad packs have been the longest lasting packs he has owned. In fact an article from The Battery University says that Ni-Cads can have a very long service life,"Over 1000 cycles", and are almost completely trouble free.
Li packs on the other hand can suffer from many problems,as witnessed by the hundreds of pages I read in forums,and I have experienced several myself;faulty BMS-no output,faulty BMS-battery doesn't charge anymore,battery overcharges-almost catches on fire inside my house,swells up like a dead puppy and smells like an electrocuted corpse!
These were very expensive,short-lived experiments,a lot of money shot to hell in as little as 5 months.
Since my bike is my transportation I don't need anymore faulty batteries that leave me walking.
Personally I do not find Li batteries reliable enough to justify the high price or weight saving,or the many possible failures.
My 48v-12ah SLA pack is almost 3 years old now(It was all I could afford on short notice when another Li pack died suddenly),and has survived nicely,considering I'm mostly stoplight to stopsign driving all day with the throttle on WFO mostly,drawing 35 amps(1630 watts)constantly. Ni-Cads are well suited to this treatment also,my friend Stephen at a China battery factory told me their Ni-cd's passed 50a current draw tests ok,they even tesed 80a draw for a short test and they survived.
That's why I want Ni-CAd,simple,tough,reliable,reasonably priced,and able to handle high current draw and fast discharge rate,and 12 lbs. lighter than my SLA's.
I have a nice 36v12ah Li pack if someone's interested,cheap,only a few months old,it seems kinda "Fat" though... :lol:

 

[frostback]

Don't trust Battery University on ANY topic.