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Internal Battery Alternavives for KX1 ??

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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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Johnny Siu

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 <[hidden email]>
收件人︰ [hidden email]
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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robert.hair

Re: Internal Battery Alternavives for KX1 ??

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" <[hidden email]>
To: "J" <[hidden email]>; <[hidden email]>
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 <[hidden email]>
> 收件人︰ [hidden email]
> 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
>
>
>
>
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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tomb18

Re: Internal Battery Alternavives for KX1 ??

In reply to this post by J

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" <[hidden email]> 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" <[hidden email]>
> To: "J" <[hidden email]>; <[hidden email]>
> 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 <[hidden email]>
> > 收件人︰ [hidden email]
> > 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
> >
> >
> >
> >
> >
> >
> >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > Message delivered to [hidden email]
> >
> >
> >
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > Message delivered to [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

Johnny Siu

Internal Battery Alternavives for KX1 ??

In reply to this post by robert.hair

Yes, correct. All these AA LiPo should not be charged inside the radio. I am charging them externally with intelligent charger. Never do the charging without any attendance.
73
Johnny VR2XMC
寄件人︰ robert.hair <[hidden email]>
收件人︰ Johnny Siu <[hidden email]>; J <[hidden email]>; [hidden email]
傳送日期︰ 2015年04月9日 (週四) 9:04 AM
主題︰ Re: [Elecraft] Internal Battery Alternavives for KX1 ??

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" <[hidden email]>
To: "J" <[hidden email]>; <[hidden email]>
Sent: Wednesday, April 08, 2015 8:49 PM
Subject: [Elecraft] Internal Battery Alternavives for KX1 ??