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Old 06-23-2011, 01:30 PM   #10
lithium.paul
Not Yet Wild
Mixed Breed
 
Join Date: Mar 2011
Location: Salt Lake City
Posts: 24
Default Re: New lithium battery discussion

Not to get all scientific here, but throwing a lithium battery into a 50-gal. drum of water is about the worst thing you could do - H20 and Li ions aren't a good combo at all - bad chemical reaction.
I don't know which company you were referring to, but what you described is essentially why an EV conversion with lithium batteries requires a BMS.
In a 36V or 48V application with a comparatively small motor and controller, with quality 12V block batteries instead of 3V individual cells, a disaster like that would be extremely unlikely.

As far as Amp hours go, you can't just look at a 125Ah lead-acid battery and say it's 3x the power of a 40Ah lithium battery. I don't know how the ratings are given but it's like comparing apples and oranges. I personally I threw 60Ah lithiums into a CC Precedent and when I went to do range testing, it ran for 2 1/2 hours straight, no stops.

Last edited by lithium.paul; 06-23-2011 at 01:50 PM.. Reason: Incomplete
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