[NSRCA-discussion] Power batteries

[Tommy Scarmardo]

After much 

--- On Tue, 2/10/09, Verne Koester <verne at twmi.rr.com> wrote:

From: Verne Koester <verne at twmi.rr.com>
Subject: Re: [NSRCA-discussion] Power batteries
To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>
Date: Tuesday, February 10, 2009, 2:57 PM



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FlightPower has a new series of packs they're calling "Eon" and claim greatly enhanced cycle life. I'm not aware of anybody who's used them yet or if they're even available (the announcement came out a couple months ago). I flew FlightPower Evo's last year with good results. When new, they made too much power and I actually dual-rated them down to a more manageable level. After about 50 cycles, they seemed to settle in to a more manageable level and stayed constant for the rest of the season. I plan to buy a couple of pairs of FlightPower Eons this spring to try out and also have available if the Evo's start losing power. My limited experience (3 seasons) in electric is that most packs will run strong the first year and then drop to unacceptable levels the second, at least, that was the case with the batteries I flew my first two years. In fairness, and I won't mention the manufacturer, I didn't store them properly out of ignorance, so that might be a
 reason, or the reason the power dropped off the second year.
 
Verne Koester

----- Original Message ----- 
From: Richard Strickland 
To: NSRCA 
Sent: Tuesday, February 10, 2009 12:29 PM
Subject: [NSRCA-discussion] Power batteries

OK, new subject: All my sets of batteries were close to the end of their useful lives this last season.  All are showing fairly high resistance values and most were noticeably down on power.  Shot. Kaput.  
Soo.. I've got to go invest in four sets.  Tru's lighter sets enable me to make weight--but I'm not crazy about the durability with some of Orland's experience--although they have replaced bad(slightly squishy--puffed would be too strong a term) packs under warranty.  I don't know how their larger and higher rated packs hold up and they 'only' put me over a couple oz. Price is pretty good.
The older Tanics I had actually held up the best over time--but the newer ones have not--and fairly expensive--but I drive by 'em twice a day and wave.  I had a set of Kokam 4800s and they didn't hold up well either and I think they have abandoned the larger battery market-- were/are expensive. I'm hearing Flightpower mentioned often and wonder if they have a battery guru that gives pattern guys a break.  I never really got serious about TP as at one time they had--as far as I was concerned--too many cells in their packs--but perhaps it's time to re-visit.
We also had some of the original FMA 5000s and they weren't all that great either--but may have improved with a new cell vendor.
 
So I'm in a bit of a quandary.  Any thoughts?  This should be interesting.
RS



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