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Old 10-30-2010, 01:59 PM   #43 (permalink)
roflwaffle
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Aren't most most Li chemistries capable of thermal runaway? In terms of lifespan the A2 still had ~20% of the initial charge left on the 350+ mile run, so I imagine the lifecycle figure refers to the number of cycles to 80% capacity.

Quote:
Originally Posted by NeilBlanchard
They are also saying the batter is 97% efficient, which a bit better than current batteries (which are ~94% as I understand it?).
Aren't most Li batteries are in the high nineties in terms of efficiency? The only exceptions I can think of are cells w/ higher internal resistance and even then that's only at higher discharge rates.

Quote:
Originally Posted by Old Mechanic View Post
50k@2500 cycles (battery cost-depreciation).
$20 per full cycle (every 375 miles under perfect conditions).
not including the electricity cost.
18.75 cents per mile in battery depreciation.
say 25 cents a mile in electricity and battery depreciation (at least).
they have a very long way to go.

regards
Mech
The lifecycle was supposedly ~300k miles, not 50k miles. Where are you getting the cost of the batteries from?
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