Thanks for posting your detailed data that may help others!
Your data and observations are similar to mine:
The capacity of my LiPo was also temperature dependent.
After about 120 re-charges (1A charge current) over an active lifespan of less than two years, it had about 30-40% of it’s original capacity, at about 10C environment temperature.
Mostly, I used only 70% of its capacity before re-charging. I used the LiPo for about 4 times until it switched off by itself. This is probably bad for its lifespan.
Usually, I recharged it just before I did an activation.
When using LiFePO4 batteries, I could not experience a capacity drop with low temperatures. From what I read, one should not charge this chemistry below 0C, but discharging at low temperatures seems to be OK.
Just to confirm…
I use Windcamp Lipo, for at least +/- 10 years and more than 1000 activations.
On activations, i keep having QSO until no more power and charging it when back home, ready to go again.
I used 5 of them, since! With the 3 Amps, i can do about 100 Qso cw/ssb.
@DH8WN i used and still use the original charger 12.6V 2.0A
I used 5 of them, not parallel… just because they lost the capacity.
i still own 3 out of 5, that means they last around 4 years and more than 200 activations.
For now, i think i’ll probably get an external accus from hobbyking 3S 5.0A (cheeper)!
Ps: i’m no sure i will be able to climb summits another 10 years (getting old) hi!