Mark, The discussion is about the KX1, and not a battery powered K2 or K3.
You want higher terminal voltage cells in the KX1 internal battery pack because there is space for only 6 batteries. 6 times 1.25 volts is only 7.5 volts while 6 times 1.65 volts is 9.9 volts - a significant difference. That is why the higher voltage Lithium (non-rechargable) batteries work so well in the KX1. Yes, if using an external battery pack, 10 NiMH batteries is desirable, 11 would be usable too. 73, Don W3FPR On 10/3/2011 9:43 PM, Mark Kachel wrote: > A look at wikipedia says the volumetric energy density of NiZn batteries is > lower than NiMH batteries. This was confirmed at a web site for strobe users. > They are more like NiCd batteries in this respect. You MUST use a > specifically designed charger. No using what ever is available. > > Wikipedia says NiZn batteries have an open circuit voltage of 1.8 volts and a > nominal voltage of 1.65 volts. The numbers for NiMH batteries are nominal, > 1.4-1.45 volts and ten percent discharge to 80 percent discharge of 1.25 > volts. > > My question is, how many NiMH batteries can you put in series before you get > in trouble running a K3 or such. It looks like ten NiMH in series is going to > be OK. Do you design with the nominal, no load voltage in mind? How many NiZn > batteries could you put in series and not worry? > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
