When buying a lithium-ion power battery, we can see that there is also a power label on the battery, the power is what we commonly use 3000mah, 4000mah, 5300mah or 10000mah, etc.. It indicates the power battery can store the amount of electrical energy, the unit is milliampere hours. And the discharge rate is usually 15C, 20C, 25C or 30C, etc.. It means the rate of discharge. Generally speaking, the model battery of Li-polymer soft pack is usually clearly marked.
For example: we have a 10000mah 20C battery. Then these parameters means.
1. 1 hour of continuous discharge at a discharge rate of 10,000 mAh per hour.
2, discharged at 5 times the speed, that is, at a discharge rate of 50,000 mAh per hour for 12 minutes (60 / 5).
3. discharging at 10 times the speed, i.e. at a discharge rate of 100,000 mA per hour for 6 minutes (60 / 10)
4、Discharge at 20 times the speed, that is, at a discharge rate of 200,000 mA per hour for 3 minutes (60 / 20).
As for how many times it discharges at what rate during the actual flight, it mainly depends on the power of ESC and motor, which is the current consumption of the load. Factors affecting the battery capacity.
1. the discharge current of the battery: the higher the current, the lower the output capacity.
2. the discharge temperature of the battery: the lower the temperature, the lower the output capacity.
3. The discharge cut-off voltage of the battery: It is set by the electrode material and the limit of the electrode reaction itself, which is generally 3.5V or 3.2V when discharging.
4. The number of times the battery is charged and discharged: After the battery has been charged and discharged several times, the discharge capacity of the battery will be reduced accordingly due to the failure of the electrode material.
5. Battery charging conditions: charging multiplier, temperature, cut-off voltage, etc. affect the capacity of the charged battery and thus determine the discharge capacity.
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