And you're absolutely sure that 279 prevents the problem 100 percent of the time, while 280 causes the problem 100 percent of the time?

I admit that this is the result of limited benchtop testing, but I did run HJ 279 for quite a long time after this thread ran its course. Couple of weeks at least. Never saw the battery icon once. Put 292 on a couple of days ago when I found that weird crashing bug with the auto changing visuals.
Have had the icon regularly since.
Conclude what you will.

Z~