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Functions
8. Battery Management System
Following by the fuzzy motor timing, the system will enter battery management system. This section
offers 6 options for using with either NiCd/NiMH or Li-Po/Li-ion battery. The motor will come up the
corresponding tones as indicator. The following is the indication with graphic reference.
8-1...NiCd/NiMH battery 4.5V cut-off (Default)
8-2...NiCd/NiMH battery 4.2V cut-off
8-3...NiCd/NiMH battery 3.9V cut-off
8-4...Light Discharge for Li-Po/Li-ion Battery
8-5...Standard Discharge for Li-Po/Li-ion Battery
8-6...Heavy Discharge for Li-Po/Li-ion Battery
When intend to choose one of above options, simply position the throttle stick from neutral point to
maximum after the indication tone. You could now simply shut down the power. The selection was
stored into the microprocessor when the throttle stick was in confirmation position.
More about Battery Management System
This section is to give you more details of the smart design of battery management system in order
to help you to utilize the function. Technically the power cut off timing was based on the cell number
and continues output current of the battery. The microprocessor will calculate the timing and to cut
the power with two steps. Because the late stage of each battery discharge cycle has quick voltage
change, such function will provide a safe process during the operation.
1st step: enabled when the single cell reaches the low point, the motor will be forced to lower the
RPM by microprocessor
2nd step: enabled when the single cell reaches the lowest point defined in the system, the motor
will be completely cut off. To regain the power, the user needs to adjust the throttle stick to the "stop"
position until the battery voltage comes back to the safe level.
The following were the detailed definition of each option in battery management system.
NiCd/NiMH battery
+4.5 volt cut off (Factory Default)
+4.2 volt cut off
+3.9 volt cut off
Li-Po/Li-ion light discharge
1st step voltage @ 3.2V
2nd step voltage @ 2.9V
Li-Po/Li-ion standard discharge
1st step voltage @ 2.9V
2nd step voltage @ 2.6V
Li-Po/Li-ion heavy discharge
1st step voltage @ 2.6V
2nd step voltage @ 2.3V
16
Functions
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