Gradual transition

Typical winter season has come this morning in Kinki area, the Continental high pressure comes down and covers here with Chills, so even in the day time the temperature outside does not come up to 10 degree celsius.
Two of EP model airplanes are under construction and soon they will be put in the air, gradually my power source is in transition these days. Kypom Lithium-Polymer battery for F3A with 10S have arrived today.
This winter season would be desirable and interesting interval of preparing for the future EP flight in the next Spring season.