Setting The Output Voltage - PowerBox Systems GEMINI II Instruction Manual

button now, the battery type "2S LiPo/LiIon" is selected.
- Pause, keep the button pressed in.
- The LEDs flash green twice, and the unit emits a double beep. If you release the
button now, the battery type "5S NiMH" is selected.
- Pause: keep the button pressed in.
- The LEDs flash green three times, and the unit emits a triple beep. If you release
the but-ton now, the battery type "2S LiFePo" is selected.
This procedure does take a few seconds, but it is designed to eliminate the risk of
changing the setting accidentally. In any case, it only has to be carried out if you
switch to a different battery type. The setting is stored permanently in the two
micro-controllers.

5. SETTING THE OUTPUT VOLTAGE

It is possible to set your PowerBox Gemini II to either of two different output
voltages. The default stabilised voltage (as delivered) is 5.9 Volt.
The performance of your PowerBox Gemini II is around 30% higher when opera-
ting at 7.4 Volt due to the reduced dissipated power.
The advantage of a stabilised, regulated 7.4 V supply compared with a direct, un-
regulated 8.4 V output is the constant voltage. This means that the servos always
operate at the same speed and generate the same torque - regardless of the
state of charge of the batteries. If the servos are operated on the unregulated
voltage of a LiPo pack, their initial torque and speed will vary considerably from
the values when the battery is half-discharged. A further major advantage of a
regulated 7.4 V voltage is the elimination of voltage peaks, and this extends the
useful life of the servos.
www.powerbox-systems.com 7