User manual PowerBox Professional

10 PowerBox-Systems − World Leaders in RC Power Supply Systems
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
• Two-cell LiIon
• 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 7.4 V or 5.9 V
CAUTION: if you intend to select the 7.4 V 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 7.4 V sup-
ply. Information on this subject can be found in the instructions for these
components supplied by the manufacturers.
Compared with a direct, unregulated voltage of 8.4 V, the advantage of a sta-
bilised 7.4 V 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 y. For example, if you were to operate the
servos on the unregulated voltage of LiPo batteries, their running characteri-
stics would alter as the freshly charged batteries steadily discharged during
the ight. Another major advantage of a regulated 7.4 V voltage is that it com-
pletely eliminates damaging voltage peaks (spikes); this extends the useful
life of the servos substantially.