PowerBox Systems PowerBox Cockpit SRS Instruction Manual page 10

Key to the individual menu points:
- Chemistry:
this is where you set the battery type. Three different types of battery
are available:
• Two-cell LiPo
• Five-cell NiMH
• Two-cell LiFe
- Capacity:
you can enter the nominal capacity of your batteries at this point.
- Output voltage:
you can select the output voltage to 7.4V or 5.9V
CAUTION: if you intend to select the 7.4V output voltage, please ensure
before you make the change that all the consumer units connected to
the unit, i.e. all servos, receivers and gyros, are compatible with a 7.4V
supply. Information on this subject can be found in the instructions for
these components supplied by the manufacturers.
Compared with a direct, unregulated voltage of 8.4V, the advantage of
a stabilised 7.4V supply is that the voltage is always constant. This
means that the servos in your model always run at the same speed and
with the same torque, regardless of the manoeuvres you fly. For
example, if you were to operate the servos on the unregulated voltage
of LiPo batteries, their running characteristics would alter as the freshly
charged batteries steadily discharged during the flight. Another major
advantage of a regulated 7.4V voltage is that it completely eliminates
damaging voltage peaks (spikes); this extends the useful life of the
servos substantially.
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