Re: TP-755CX screen dims using battery

[dewar@nile.gnat.com (Robert Dewar)]

"   The screen on my new SVGA TP-755CX dims considerably
   whenever I remove the AC power cord and it switches to
   battery power.  This happens even when the Li-ion battery
   shows a 100% charge, and the computer is configured for
   "High Performance" under battery power."

this is normal, it is done to conserve battery power. The undocumented
command ps2 br n (n = normal) sets the brighteness to normal (or at least
did on previous thinkpads), but eats up lots of battery power. TH command
ps2 br e restores the normal (dimmed) state.