Posted by Elecraft mailing list on Apr 26, 2016; 9:32am URL: http://elecraft.85.s1.nabble.com/KX3-Suggested-External-Battery-tp7616683p7616708.html
I can vouch for the Bioenno Power LiPo batteries. Bought a 20 ah battery for eComm and urban field work. It only weighs 6 lbs. A 10 h only weighs 3 lbs.