As an update on my battery experiment, I tried this:
I charged all four packs overnite (14 hours) at the 1/10 C rate.... 80
ma for the two 800 mah NiCad packs, 210 ma for the two 2100 NiMH
( remember, the initial,post 3 cycle, discharge time for the packs was
2:14 for the NiMH at 1/2 C, and 2:10 for the NiCads at 1/2 C )
I took packs #1, one each NiCad and NiMH, and installed them in the
plane and flew 4 flights. I took the #2 packs along in the tool
I got home and left everything in the garage for 10 days, got to over
95 deg during the afternoons...
I discharged remaining capacity and found this:
#1 1:59:28 (flown)
#1 1:48:21 (flown)
hmmmmm..... what to observe... well, first off, contrary to what I've
heard, it appears that the self discharge of the NiCad's is higher
than the NiMH's.... and after 10 days of sitting and self discharging
in moderately hot environment, the effects of 4 flights on relatively
high capacity batteries is apparently masked out or equalised or
whatever by the self discharge.... ???? anyone ???
and yes, I'm absolutely sure I didn't get the two NiCad packs mixed
up.... and the initial discharge times on these packs was within 30
seconds of each other...
I guess the only meaningfull info here is that the NiCads have a
higher self discharge rate....
Treasure Island, FL