the notebook pc 30 during charging the external air is introduced through the intake exhaust unit 24 and supplied to the fuel cell module 16 the by products of the electricity generation are discharged through the intake exhaust unit 24 to the opposite side to the notebook pc 30 according to the charger 10 constructed in this manner the intake exhaust unit 24 and power transmission unit 20 are arranged on the opposite faces of the charger even when the power transmission unit 20 and power reception unit 50 of the apparatus to be charged are joined together therefore the intake exhaust unit 24 cannot be closed by the apparatus to be charged so that necessary air for the electricity generation can be reliably introduced at the same time the water vapor and carbon dioxide produced by the electricity generation can be discharged away or oppositely in this case from the power transmission unit 20 so that the discharged by products can be prevented from impinging on the apparatus to be charged according to the charger 10 necessary air for the electricity generation can be secured and the apparatus to be charged can be protected against the produced water vapor and carbon dioxide thus the reliability of the charger can be improved according to the notebook.