The 29796 converts 100 to 240 Vac to a regulated 24 Vdc. It comes standard with a USA/Canada plug, with an option to add a kit for international use. The cable has 5 ft length and terminates in pigtails with "+" and "-" labels.
The 6186 is a 10 ft, two-conductor cable that allows an external battery (typically large capacity) to be connected to the CH512R. It has a two-pin connector on one end that attaches to the CH512R and pigtails on the other end that attaches to the battery.