KO Propo Cooling Fan Booster

Japanese radio and servo manufacturer KO Propo has release this new Cooling Fan Booster.  This product is a boost circuit unit that connects between the receiver and the cooling fan, boosting the voltage to approximately 8V (input voltage range: 2.5V and above) to increase the fan speed and air pressure, thereby improving the cooling efficiency of the motor and ESC.  It can be easily installed by connecting the connector.  Excluding cable the booster measures 28 x 11.5 x 9mm.

Source: KO Propo [kopropo.co.jp]