Hi de
1) I'm always on external, never battery, all lights stay on (my way, so not qualified to answer)
2) If "clear" means ending up with all scan lists completely empty, then:
EZScan
SCANLISTS (bottom tab)
select scan list in upper left box
use POS column to "highlight" all channels
"Left Click" anywhere in Scanlists column
(new working popup box appears)
click All Off tab
click Set tab
(my puter stalls here for a few seconds while working)
repeat for all scan lists that contain frequencies/data
All previous data now resides in the Unassigned Objects (special scan list)
Here, the objects can be deleted from the program completely
or, they can be redistributed to scan lists as desired
rob