[NSRCA-discussion] Electrics

[Richard Strickland]

After the first couple cycles, I was only getting 2.5-3 charges on
Interstate’s largest deep-discharge units.  We did the math and that was
about right.  They have ‘Economy’ batteries that are units that have been
turned back in, a little old, etc that they sell for very little.  I got a
basically new one to add to the old and get enough charges for what I need.
Thought about a Honda generator—but with the new chargers—you have to go up
a notch or two for charging capacity.  It’s always something.

I finally got off my butt to fix the Impact the tunnel-vision-challenged guy
ran into on the runway last year and screwed up the right wing and fuse.
Looks like it gained about 3.5 oz. total. It was a smidge over 11 lbs with
the 3200s b/4 the crash—what a disappointment--and now it’s just going to
be

 well, not my number 1 for sure.  I thought about asking him about
insurance, but since the thing was going to be way over with better
batteries, I just chalked it up


RS

-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Nat Penton
Sent: Friday, April 14, 2006 2:09 PM
To: NSRCA Mailing List
Subject: [NSRCA-discussion] Electrics

The only battery giving me a problem is the lead acid Marine 'deep
discharge'  battery used for field charging of the lipos. It has lost about
70% of it's capacity in seven months.

It provided six 12min flts when new and was purchased from Academy Surplus
for $40. It has provided a total of maybe 80 flights ( 30 cycles ??? ). The
problem is likely due to my maintenance ( lack thereof ). I left the battery
in a partial discharge state sometmes for weeks. You can find maintenance
needs on Google at agmbatteries, courtesy Earl Haury.

West Mountain sells a gell cell, 54#, 84ah, rated for 500 cycles @ 100%
discharge ( 20hr discharge rate ), $149 del. I will see how it performs
under our conditions.
                                                      Nat
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