The motor all use 545 motors with front and rear double ball bearings. The motors themselves have built-in cooling fans, and the impellers are high speed and precise aluminum alloy impellers. The applicable voltage of model A is DC10,8V and the power is 120W, and the applicable voltage of model B is DC 14,4V and the power is 110W. The appearance and dimensions of these two fans are the same, except that the applicable voltages of the motors at the back are different.
This type of high-power fan is generally powered by high power lithium battery. If you want to use a voltage-stabilized switching power supply, you must pay attention to the current of the power supply must be large enough, the fan start current exceeds 30A. The motor wiring must recognize the positive and negative poles, the terminal with a red dot is connected to the positive pole, and the other terminal is connected to the negative pole. If you connect them in reverse, the suction of the fan will be reduced, and the noise will alslo be increased.
Type A Weight : 223grams Rated voltage : DC10,8V Working current : about 9,6A Power : About 120W
Type B Weight : 225grams Rated voltage : DC14,4V Working current : about 7A Power : About 110W