NiMH & NiCAD.... an experiment.....

NiMH & NiCAD.... an experiment.....

Post by Jim Whi » Sat, 05 Jun 1999 04:00:00



I had a case of Sanyo 800AR (800mah) cells that I got from a factory
overstock.... never used, but quite "long in the tooth" as regards
shelf life.... made up a few packs for my Cap232 but found they only
had a capacity of about 500-600mah....sooooo... I carted them off to
the local ni-cd store (yup, we really have useful stores down here in
Florida!) for re-cycling, and bought some new packs made to order....
4 welds on each end of the straps, and 22 ga. wire... what I bought
were two 5 cell 800AR (800 mah) packs for thier great fast charge
capability, at $24.99 each, and, as an experiment, two NiMH packs with
cells of the same size and weight.... they're supposedly Sanyo?...
Green sleeves.... 2100 mah !!!.... $39.99 each...... my intention is
to put one of each in my dual-switch-ala-Red setup.... both will be
exposed to flight use and environment.... I'll keep a close eye on the
state of charge of the 800 pack installed, in case the NiMH decides to
go belly-up.... that way the plane won't....  my intention is to get
an idea of the performance and longevity and durability of the NiMH
packs....

for starters, I did 3 cycles of 1/10 C charge (16 hours) and 1/2 C
discharge on all 4 packs.... that's 400 ma discharge on the 800 packs,
and 1.05 amps on the 2100 packs.... 80ma and 210ma charge,
respectively.... the 800 packs both gave 2 hours, 8 minutes after the
3rd cycle... the 2100's 2 hours, 14 minutes (that's 2345 mah !!!)...

will keep ya'll posted...

Jim White
AMA 2466
WB2WOY
WPMPA/BCF/PFC
SouthShoreSoftware
Treasure Island, FL

 
 
 

NiMH & NiCAD.... an experiment.....

Post by Malcolm Loga » Sun, 06 Jun 1999 04:00:00


Interesting !  Thanks for offering to keep us informed - appreciate it.
What cycler are you using ?  Malcolm

Jim White wrote in article
.... I'll keep a close eye on the

Quote:
> state of charge of the 800 pack installed, in
> will keep ya'll posted...

> Jim White


 
 
 

NiMH & NiCAD.... an experiment.....

Post by Jim Whi » Sun, 06 Jun 1999 04:00:00


Quote:

>Interesting !  Thanks for offering to keep us informed - appreciate it.
>What cycler are you using ?  Malcolm

a very expensive millitary surplus Christie unit....

Jim White
AMA 2466
WB2WOY
WPMPA/BCF/PFC
SouthShoreSoftware
Treasure Island, FL