Power supply circuit of aircraft

A power supply circuit of an aircraft, the power supply circuit comprising:

• a first power transmission path configured to supply electric power to at least one load device;
• a second power transmission path provided in parallel with the first power transmission path, and configured to supply electric power to the at least one load device;
• and
• a third power transmission path connected to the first power transmission path, and configured to supply electric power from a charging device provided outside the aircraft to the first power transmission path,
• wherein at least one battery is connected to both the first power transmission path and the second power transmission path, and
• when the at least one battery is charged with the electric power supplied from the charging device, the electric power is supplied from the charging device to the battery via the first power transmission path, and the electric power is supplied from the charging device to the battery via the second power transmission path.