I have 3 18650 Li-ion cells connected in series. Each have a capacity of 2200 mAh and can discharge at 10C. First of all , tell the maximum amps I can draw from them. If I am not wrong, I can draw 22 A. Now, I have a setup as follows- I have a A2212 2200kv brushless motor and 30 A SimonK ESC connected and powered by the battery setup as descried earlier. I have a Arduino to control the speed of the motor from 0% to 100%.I connect the motor to a 1045 propeller and run the motor in the loop as Arduino is programmed. The motor speeds up until 50% throttle, but post that it starts slowing down and starts running steadily and I can make out by the sound that the motor is spinning at lesser than 50% throttle. I tested the circuit with a multimeter and with some research I understood that the voltage as the motor reaches 50% throttle reduces to 9 V which triggers the ESC's low-voltage protection system. I felt that this was an issue with the propeller and switched to a 7038 (7 inch propeller) but it ended with similar results. I also found out that the motor was only drawing 4 A of current by 50% throttle just before the cut-off was triggered. Can someone please help me figure out better Li-ion battery specs which can help eliminate this issue and prevent the voltage from drooping so low, or any circuit or module which can help reduce if not eliminate this issue maybe like using capacitors, buck converters etc. ESC - https://robu.in/product/standard-30a-bldc-esc-electronic-speed-controller/ BLDC MOTOR - https://robu.in/product/a2212-10t-13t-2200kv-brushless-motor-with-soldered-connector/ LI-ION CELLS - https://robu.in/product/orange-isr-18650-2200mah-10c-lithium-ion-battery/ BATTERY PACK - https://robu.in/product/black-plastic-storage-box-case-holder-battery-3-x-18650-cell-box-without-cover/
Just another point, I have fit the cells in the battery holder and connected the thin wires from the holder directly to the ESC's power wires, just saying if this might provide more context!
Appreciate any relevant help!