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Re: [KX1] A LiFePO4 internal battery option

Posted by Ignacy on Mar 28, 2011; 1:44pm
URL: http://elecraft.85.s1.nabble.com/KX1-A-LiFePO4-internal-battery-option-tp6213539p6215015.html

 have lower energy density than regular Li-Ion rechargeables but due to lower voltage one can use 4 of them for about 14 V max as opposed to 3 of the regular ones with 12V max. For K1 the 3 Li-Ion would be a better fit as 10-12V is sufficient and weight is half of  LiFePO3. The last one are better IMHO when the minimum voltage is >11V, e.g., for regular HF radios including K3.

I have the regular Li batteries in K2 for many years and never a problem except higher Ah at 1/4 weight of lead acid.. The only trouble is a need for connecting to an external charger. A simple choice is a small board that attaches to a laptop charger and contains adjustable 1A regulator.

Ignacy, NO9E