I've been looking into the use of lithium ion hybrid car batteries as a replacement for lead acid EV batteries. I keep seeing references to 48V "Mild Hybrid Electric Vehicle" technology, like this: http://www.hybridcars.com/bosch-announces-new-48-volt-battery-pack/
I also keep seeing cost predictions/targets of Li-Ion EV batteries, at least in this 48V MHEV format, dropping to essentially the same as lead acid units, on a useful energy availability basis. Apparently they won't need fans and will be in conveniently sized modules.
But I don't yet see any of these 48V MHEV batteries for sale. What I see are astronomically expensive batteries in more familiar formats.
My very cursory look into Li-Ion batteries suggests a mass based energy density of about 3x that of lead acid. Reducing my 520# battery bank to 175# is very attractive.
Are any of you familiar with this, or similar, technology? I'm a couple of weeks away from replacing my 8, 6v EV batteries; if the Li-Ion stuff was available at/near the target costs I'd jump, no other technical problems assumed. I have a feeling I'm a few years early.
John Clay
Posted by: jmedclay@yahoo.com
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