Disclaimer: what follows is entirely my own personal opinion, not necessarily that of the ARISSat-1 team or anyone else. I might be missing information that would affect my analysis.
Ken's plot is extremely valuable. It strongly suggests battery failure, not a negative power budget as Tony, AA2TX suggests. Note the sharp and consistent *increase* in daylight battery voltage that occurred late on Aug 11, roughly coincident with sharp *decreases* of voltage during eclipse and reports of computer resets and extended low power operation. This is inconsistent with a negative orbit-average power budget. If that were the case, the battery would never reach full charge and the voltage would never rise so high.
Phil,
How about you designing circuitry/program to charge "cells" individually rather than the "battery". Or has that been tried??
73 Dave
73, Dave, WB6LLO dguimon1@san.rr.com
Disagree: I learn....
Pulling for P3E...