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

[Anthony Romano]

Packs come off charger and get a rubber band over them. When the go in the plane rubber band comes off. Same concept less bread.

> From: vanputte at cox.net> Date: Fri, 29 Aug 2008 11:51:25 -0500> To: nsrca-discussion at lists.nsrca.org> Subject: Re: [NSRCA-discussion] FW: ESVs for flight pack lipos?> > A friend was putting Lipos into his airplane and I noticed he took > one of those plastic tags, like are used to seal of the ends of the > bags covering loaves of bread, off the positive lead of the battery. > I asked him what that was all about. He explained that he put the > tags on the battery leads after he'd charged the batteries. If he > didn't find a plastic tag, the battery wasn't charged. That way he > only needs one ammo can to keep Lipos in.> > Ron VP> > On Aug 29, 2008, at 11:33 AM, John Pavlick wrote:> > > I use a really simple method to avoid this problem. I have 2 cases > > for my batteries. One is the "charged and ready" case and the other > > is the "I just flew these" case. Battereis come OUT of the charged > > and ready case and go INTO the plane. When you land, the batteries > > come OUT of the plane and go INTO the other case. The logic for > > charging is opposite that of flying. As long as you don't put the > > batteries in the wrong case, it works. You have to develop a habit > > but it's not too difficult. Works for me and it costs nothing.> >> > John Pavlick> >> > --- On Fri, 8/29/08, James Oddino <joddino at socal.rr.com> wrote:> > From: James Oddino <joddino at socal.rr.com>> > Subject: Re: [NSRCA-discussion] FW: ESVs for flight pack lipos?> > To: "General pattern discussion" <nsrca-discussion at lists.nsrca.org>> > Date: Friday, August 29, 2008, 4:22 PM> >> > Hi Gordon,> >> > I suspected that. I was thinking of building a gadget that lit up > > an LED if the voltage was over 41 or so. It could be very > > inexpensive and could save a set of expensive batteries. I have > > seen more than one guy take off with batteries they thought they > > had charged. They found out only when the voltage had dropped too > > low. I almost did it once but I had an Eagle Tree TM system and > > checked the voltage before I took off. I don't always use the ET > > so it would be nice to have another painless way to know the packs > > are charged.> >> > Jim> >> >> > On Aug 29, 2008, at 6:16 AM, Gordon Anderson wrote:> >> >> 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> >>> >> 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.> >>>> >>> 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> >>>> >>> See what people are saying about Windows Live. Check out featured > >>> posts. Check It Out!> >>> Talk to your Yahoo! Friends via Windows Live Messenger. Find Out > >>> How _______________________________________________> >>> NSRCA-discussion mailing list> >>> NSRCA-discussion at lists.nsrca.org> >>> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion> >>> >> _______________________________________________> >> NSRCA-discussion mailing list> >> NSRCA-discussion at lists.nsrca.org> >> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion> >> > _______________________________________________ NSRCA-discussion > > mailing list NSRCA-discussion at lists.nsrca.org http:// > > lists.nsrca.org/mailman/listinfo/nsrca-discussion> > _______________________________________________> > NSRCA-discussion mailing list> > NSRCA-discussion at lists.nsrca.org> > http://lists.nsrca.org/mailman/listinfo/nsrca-discussion> > _______________________________________________> NSRCA-discussion mailing list> NSRCA-discussion at lists.nsrca.org> http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
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