[Elecraft] Internal Battery Alternavives for KX1 ??

[Tom Blahovici]

Hi
You could buy a 3s battery such as what is used in radio control planes and quadcopters. . There are various current ratings available. You can choose one that fits the inside of the radio. 
As to a charger I've used a turnigy accucel 5 amp. Works very well but you need an external 12v power supply rated at 5 amp or more. It is made for lipos and other battery types and will do per cell balance. It has safety features and you can add a temperature probe for further safety. In any case,  you should not charge it in the radio but outside in a fireproof container. Never leave one unattended. 
The turnigy is about 35$ from hobbyking. 
Tom
va2fsq.com

On Apr 8, 2015 9:04 PM, "robert.hair" <robert.hair at sbcglobal.net> wrote:
>
> Be very careful to charge Lipo batteries only with a charger specifically 
> designed for that type of battery, unless you don't value your K1 or your 
> home!!!
>
> ----- Original Message ----- 
> From: "Johnny Siu" <vr2xmc at yahoo.com.hk>
> To: "J" <tscm4u at gmail.com>; <elecraft at mailman.qth.net>
> Sent: Wednesday, April 08, 2015 8:49 PM
> Subject: [Elecraft] Internal Battery Alternavives for KX1 ??
>
> > Hello Jay,
> > There is a LiPo 3.7v AA size available. Therefore, 3.7 x 3 = 11.1v in 
> > parallel using the supplied battery holder but re-work the wiring between 
> > the two holders could be a solution. This kind of battery will go up to 
> > 4.2v when it is fully charged so that the max voltage generated = 4.2v x 3 
> > = 12.6v and still within the tolerance.
> > If your KX1 is with KX3080, then it would be a bit tricky in getting the 
> > max power from the radio.
> > 73
> > Johnny VR2XMC
> >       寄件人︰ J <tscm4u at gmail.com>
> > 收件人︰ elecraft at mailman.qth.net
> > 傳送日期︰ 2015年04月9日 (週四) 8:18 AM
> > 主題︰ [Elecraft] Internal Battery Alternavives for KX1 ??
> >
> > I'm considering ways to increase transmitter power, by making changes to 
> > the
> > internal batteries in the KX1.
> >
> > I've seen a mod which added batteries. and a lot of other boards and
> > dangles.
> >
> > In another mod, the owner just fabricated a larger KX1 chassis bottom and
> > changed battery holders to obtain 14V.
> >
> >
> >
> > How about using six AA-size, 2.3 to 2.4 V batteries (if such things exist)
> > and the existing battery holders in the KX1?
> >
> >
> > Thoughts?
> >
> >
> >
> > 73
> >
> > Jay
> >
> > W6CJ
> >
> >
> >
> >
> >
> >
> >
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