The invention relates to a multifunctional nickel hydrogen and nickel cadmium cell charging device, which comprises: a base with charging slot which comprises a charging control circuit electrically connecting the charging slot and power source input interface. Wherein, the charging control circuit via a electric switch divides the charging slot into at least two groups of charging circuits; when the power source input interface is electrified, the electric switch can automatically break the circuit to separate the cells on the charging cell to be charged in own charging circuit; when the power source input interface is not electrified, the cell on owe charging circuit can automatically connect each other in series to supply power, and via the emergency power supply output interface at one side of base to supply the power of electric product to form the emergency power supply condition. The invention charges the cells separated and uses the cells in series to protect the charging cell and when lacking outer power source, it can be used to supply power. |