Typical Li-ion that you would use in a car has a cycle life that is
something between 2000 and 4000, 80% DOD cycles.
There is a set of A123 M1 26650 cells an a cycle tester for several
years that have run well over 16,000, 100% DOD cycles at 1C. They are
still above 50% remaining capacity. This is not all that surprising to
those that know A123 Systems cylindrical cells.
The LiFePO4 A123 26650 cells start out losing about 5% per 1000 cycles.
This declines to about 2% per 1000 cycles. They never really "fall off a
cliff" like lead acid. They just slowly fade in capacity.
Bill D.
On 9/10/2014 6:34 PM, Jan Steinman via EV wrote:
From: Bill Dube via EV <ev@lists.evdl.org>
NiMH has been largely eclipsed by Li-Ion.
Except in lifetime. Nickel technology is 3,000+ charge/discharge cycles if well cared
for, Li-ion what, 1,000 max? And nickel cells have about the same capacity until they
seriously break, whereas Li-ions "degrade," no?
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