Unlike lead-acid batteries, that seemingly fall off of a cliff when they
die, li-ion batteries slowly and steadily decline in capacity as they age.
Li-ion batteries steadily lose capacity both with age and with the
number of cycles. They lose capacity a bit more quickly at first, and
then a bit more slowly. They keep working until the capacity is so low
that they lose their usefulness.
This assumes that you are charging them correctly and discharging them
within their proper voltage range and temperature.
Bill D.
On 3/5/2017 6:12 PM, Larry Gales via EV wrote:
Consider the use of used electric car Lithium batteries for electric
storage in a battery farm. Suppose the batteries are removed from the car
after losing 20-30% of their range and moved to a climate controlled, shock
and vibration free environment and where the rate of charging/discharging
is kept to a low level, say 10 kW. Does anyone know what is the expected
lifetime of those batteries in that environment? Does the battery become
erratic below a certain level?
Thanks,
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