What I mean is if I have a
lipo battery that is rated for 500-800 charges and I only want it as a backup battery how long will this battery last? That is to say is it 500 charges forever? Like if I take an unused lithium ion battery is 5 years old and start using it will the charge be just as good as if I used it brand new? And will I still get that 500-800 cycles?
No experience of
how many cycles, but have some experience of
how many years a lipo may last.
Over the last 11 years since I went electric, about a dozen of my lipos died, but most lasted 5-6 years of sporadic use (say 25 flights a year on each).
1.
I believe the biggest killer of lipos is storing them fully charged.
2. The second biggest reason is drawing too many amps. I usually never draw over 10c from a 20c lipo.
3. The third is using them for too long in each use. I usually never go below 3.8v per cell.
I guess I'm too conservative, (no helis, no 3d, no quad).
But when stored at 3.85v, I've been able to use them after a gap of 2-3 years!
Lipo may however not be a good choice as a 'backup battery'
Hope you find this of some use
Regards.