[NSRCA-discussion] FW: ESVs for flight pack lipos?

[Gordon Anderson]

Jim,
 
The maestro will not accept a 42 volt input. It was designed as a flight pack
testing system and includes a programmable battery load. It will calculate and
display the packs internal resistance as well. 
 
--Gordon

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From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of James Oddino
Sent: Thursday, August 28, 2008 4:18 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] FW: ESVs for flight pack lipos?


What is the voltage range?  I'd like to have a unit that would stay in the plane
and tell me that my 42 volt battery is charged when I plug it in. 

Jim


On Aug 28, 2008, at 3:42 PM, Derek Koopowitz wrote:



I bought mine from Gordon Anderson...
 
http://www.mstar2k.com/
 
Look for the Maestro on his page.

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From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Richard
Strickland
Sent: Thursday, August 28, 2008 11:36 AM
To: NSRCA DISCUSSION
Subject: [NSRCA-discussion] FW: ESVs for flight pack lipos?



I'm switching some of my stuff to 2 cell lipos into a regulator (learned the
hard way that you separate the regulator on the OTHER side of the switch from
the battery--but that's another story).
The question(s): What is a good, relatively small ESV that has a load to check
the lipos? What voltage do you let them get down to before no go?
My 30 year old SO (Ye Olde ESV) ranges just miss that middle ground. I've got a
voltmeter--but it's not loaded.  On a 1200 pack(still lighter than 4 nicads WITH
reg.) on four flights, the drop was from 8.4 down to 8.25V.  I'm going to a 780
on another airplane and my understanding guys are getting up to 7-8 flights on
that size pack.  But how do you check them?
 
Thanks,
 
Richard


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