Quote:
Originally Posted by neiloliver
What is needed is a true scientific head to head test during 2008. The new homologated NiMH cells Versus the latest Lithium Polymer offerings. Personally I dont think they (LiIon Polymer) should be allowed unless the products:
(1) Contain cells which carry UL1642 recognition
(2) Have on board protection circuit for over voltage (over charge) and under voltage (over discrage).
(3) Are hard cased in at least 1.50mm of UL94V-0 plastic.
This would make them 'proper' products, not cells linked together and which rely on the user to (i) balance them (ii) correctly set their charger so they dont dangerously over charge them (iii) Ruin them by over discharging them.
If you were asked to do these things with your laptop battery you would laugh!
Neil
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neil i know you know your stuff, but if sence is used there fine, doing what you suggest would only do one more thing, make them more expensive.
Quote:
Originally Posted by Chrislong
MAH divided by 1000 = 1c. So a 5000mah is 5ah per 1C
Therefore 20c 5000mah packs = 5 x 20c = 100 amp continuous for 1hr = 100ah
5000mah 30c = 5 x 30c = 150 amp /1hr
Its funny how I can understand maths, but then minutes later I re-read what I write and it baffles me.... 
So, mark, so figures you state for 4900mah packs were actually 5000mah packs? or am I wrong with my maths? LOL. Im confused
Chris |
i used the text off trakpowers site!!
Quote:
Originally Posted by Chrislong
This would be good for all of us, makes them idiot-proof. But I take it the tourers have not adopted this? if not, does this mean if we take on Lipo in 2009 we have to go with a single homoligation list used by tourers too, i.e. is it too late for BRCA to enforce this for 2009 and so for the manufacturers to implement it in the pack. (... lots of what if's in there...)
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tourers are not having a pack list, nor are they having capacity cell counts etc
from what i have been told, there will be a max width and length, 7.4 volt max, and hard cased and thats about ur lot.
i know for fact that less lipo's have gone wrong this year, than nimh have had go wrong, and we have no saftey precautions for nimh