As follow up to Echo Charger failure, I removed the unit and noted that it had a rattle.
showed it has a small grey or silver piece about 3/8" across, believed to be metal, that is rattling around the insides. And like all Xantrex products, not easy to disassemble due to use of rivet-like fasteners.
I normally blame myself, rather than the device, when something doesn't work. Yesterday I spent hours trying to figure out the problem, when no amount of re-wiring would have helped.
Just goes to show....