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Mike Sexsmith

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John,

I have been using a 3-cell 2100 milliamp Li-Poly with my KX1 and am pretty
pleased with it, but would consider using a 4 cell if shown it is safe (or a
way to do it safe...) I guess I just don't want to be the first on to find
out if it works using MY KX1 either... :>)

Please let me me know if you learn a way to do it by posting results to the
reflector... Thanks!

Michael Sexsmith
W7MSX

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Don Wilhelm-3

RE: (no subject)

Michael,

The diode voltage dropping trick sounds like a very 'safe' method to me.
One can even switch out the diodes when the battery voltage falls. I have
used this technique many times, but not with the particular batteries you
are using - figure the number of series diodes that you need from the
maximum charged battery terminal voltage and the diode forward voltage
drops.

73,
Don W3FPR

> -----Original Message-----
> I have been using a 3-cell 2100 milliamp Li-Poly with my KX1
> and am pretty
> pleased with it, but would consider using a 4 cell if shown it is
> safe (or a
> way to do it safe...) I guess I just don't want to be the first
> on to find
> out if it works using MY KX1 either... :>)
>
> Please let me me know if you learn a way to do it by posting
> results to the
> reflector... Thanks!
>
> Michael Sexsmith
> W7MSX
>

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Richard Thorne-2

Re: (no subject)

In reply to this post by Mike Sexsmith

Mike:

Just curious, are you using any type of voltage cut off circuit between the
battery and KX1?

I use lithiums in my R/C planes and I set my speed controls for a cut off
voltage of 3.0v per cell. I am not a lithium expert but if the batteries
are discharged too low they will not take a charge.

I'm interested in this as I thought lithiums would be a neat way to go with
a KX1 or K2 when I finally get around to building one.

Rich - N5ZC

----- Original Message -----
From: "Mike Sexsmith" <[hidden email]>
To: <[hidden email]>
Sent: Wednesday, April 12, 2006 6:12 PM
Subject: [Elecraft] (no subject)

> John,
>
> I have been using a 3-cell 2100 milliamp Li-Poly with my KX1 and am
> pretty pleased with it, but would consider using a 4 cell if shown it is
> safe (or a way to do it safe...) I guess I just don't want to be the first
> on to find out if it works using MY KX1 either... :>)
>
> Please let me me know if you learn a way to do it by posting results to
> the reflector... Thanks!
>
> Michael Sexsmith
> W7MSX
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com