Airborne batteries

[J.Oddino]

Use the metal can Li-Ions and you can leave them in the airplane to charge.
There are some reports that they open up if they get over 140 F so don't
leave them in your vehicle on a hot day.

Jim O
----- Original Message ----- 
From: "Anthony Romano" <anthonyr105 at hotmail.com>
To: <discussion at nsrca.org>
Sent: Thursday, October 06, 2005 1:14 PM
Subject: Re: Airborne batteries


> Do you guys remove your li from the plane when charging like the AMA
> recomends? What about temp if you leave your plane in the car?
>
> Anthony
>
>
> >From: Adam Glatt <adam.g at sasktel.net>
> >To: discussion at nsrca.org
> >Subject: Re: Airborne batteries
> >Date: Thu, 06 Oct 2005 13:34:37 -0600
> >
> >Lithium polymer has some advantages, but also some disadvantages.
> >
> >Pro
> >Extremely light: 1320mAh for 58g, 2000mAh for 80g
> >Choose your exact voltage by use of a regulator (20g more weight)
> >No self discharge. Charge today, fly next month with confidence
> >
> >Con
> >Battery can ignite in flames if you make a mistake.
> >Battery can be ruined if you leave your plane on.
> >
> >I'm not sure about cost.  parts.rctoys.com has these costs:
> >5.1, 5.6, or 6.0 regulator for $21
> >1320mAh battery for $33
> >regulator w/ fail safe switch w/ 2100mAh battery for $66
> >
> >I've been flying lithiums for three seasons now and will never go back,
but
> >I have a lot of experience with the technology. For someone new to
> >lithiums, there is a lot of learning to do.
> >
> >For a charger, you can get a simply plug, push, and charge charger for
$45.
> >  I wouldn't go that route, though.  It is important to know how much
> >capacity you use per flight so you know how many flights you can do on a
> >charge.  To know need you need a charger with a display, like the Triton,
> >Hyperion, Duratrax Ice...all in the $110-140 range.
> >
> >Adam Glatt
> >
> >Bob Richards wrote:
> >>Guys,
> >>  I'm needing to replace several nicad airborne packs for my radios (as
> >>well as a couple of transmitter packs). I'm wondering what has changed
in
> >>the technology in the past 8 years.
> >>  NiMh packs had just hit the market about 10 years ago, and as I recall
> >>it seemed that they did not stand up well to vibration - several
inflight
> >>failures being reported. Seemed they were ok for transmitters. Has that
> >>changed?
> >>  I know Li-ion and Li-poly are now available, but what type of charging
> >>apparatus am I looking at investing in? I also think I need to use a
> >>regulator with these?
> >>  I don't presently have a fast field charger and would like to have
one,
> >>is there one that covers all the above bases?
> >>  Thanks in advance,
> >>  Bob Richards.
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