Don Wilhelm <w3...@embarqmail.com> writes: > The charging scheme for the K2 internal battery is based on using an > SLA battery. If the battery is changed to another battery chemistry, > the charging circuit would have to be modified to match the charging > requirements of the replacement battery type. > Since Lithium batteries require very special charging techniques, this > is a matter that is not to be taken lightly. > A simple replacement of the K2 SLA battery with another battery > chemistry would have to be a redesign of the charging mechanism.
Don is of course right about simply putting in a battery with different chemistry. But, there are LiFePO4 batteries with integrated controllers specifically made so that they can be substituted for lead acid in existing equipment. Basically it has a charge controller for the LiFePO4 that operates on the charging voltage for lead acid. This item replaces the 7Ah size; I don't know if there's an equivalent item for the size in the K2. http://www.amazon.com/A123-Systems-ALM-12V7/dp/B008VVO6LE/ref=pd_sim_sbs_328_12?ie=UTF8&refRID=0R6H1NBH31JQ509VCJ3V (I have not tried this; I'm still a lead-acid using dinosaur.) 73 de n1dam ______________________________________________________________ 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 Message delivered to arch...@mail-archive.com
