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