Doesn't it say that a droid operating on reserve energy can work at standard ratios including 1 round normal power = 2 rounds low power? So a droid even on emergency power can use up 4 rounds of its emergency power for 1 round of action at normal power. That's how I read it.
No, that's not what I meant. Let's try rephrasing it...
Vulnerability to Power Failure: A droid runs off some kind of power supply, and if it loses power it becomes helpless and unconscious until its power is restored. Most droids have internal batteries that allow them to operate independently for a certain period of time. A standard droid can run on
normal power for 10 days before its batteries start to flag; it then has energy reserves to continue for 5 days on
low power followed by 5 days on
emergency power, after which it is forced into
shutdown.
A droid operating on
low power acts as if it was fatigued, a droid on
emergency power acts as if it were exhausted. A droid can switch its own power off using
emergency shutdown, becoming helpless and unconscious until it is reactivated (either by an internal timer or another creature flipping the droid's "on" switch). A droid can also operate on
standby power, it can observe its surroundings and cogitate but cannot move (treat as if the droid were paralyzed).
A droid can run at a lower power regime than its battery power dictates, thereby extending the duration of its operation. Switching power regimes is a move action. For example, a droid reduced to
low energy reserves is unable to operate at
normal power but can operate at
low power,
emergency power or
standby power. One round of
normal power is equal to two rounds of
low power, four rounds of
emergency power or 20 rounds of
standby power. The power ratios are the same for droids operating on reserve power, so 1 round of
low power equals 2 rounds of
emergency power and 5 rounds of
standby power.
Is that clearer?