Quote:
Originally Posted by t-maxxracer32
are you saying that the cars should be running on lipo packs? or A123 system cells? (sorry i didnt read the whole thread just skimmed it)
Id feel nervous driving in a car with 500lbs worth of lipo packs. sure they are stable when handled properly, but youve seen the threads where they were handled right but something in their chemistry caused them to either explode or just burst.
imagine 500lbs of this stuff going off..........
now if you are asking that they run off lifepo or A123 type batteries that are almost always stable then i can understand your argument as to why they are using cheaper cells and adding extra weight.
although they may seem like rookies im sure they know what they are doing and theres gotta be a reason for this
but who knows.. maybe they just didn't research all the options with the batteries they use.
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Battery technology is only getting better. It's how you use it that will determine if it'll catch fire, vent, puff and fail. Manufacturing defects can also be a factor, but most of the stuff I've seen is either user error, pack build issues, people just doing stupid stuff like hooking a lipo up to a car battery and lipo sack marketing. Would you like to see a race car running on lipos:
http://www.proev.com/ (It uses 565lbs of lipos). They could've gotten better performance even with the now older A123 2.3Ah cells that we use in our R/Cs. The LiFePo4 chemistry does show it's safer, but it also has its trade off. My point is, for a car such as the Tesla, they need to use better cells and not just some laptop energy cells. Now how do you feel having 1000lbs. of non high discharge rate cells behind you? That's what you get with the Tesla at $120k.