Patent ID: 7692400

Claim:
A mobile type power supply, comprising a battery pack and a connection means: wherein the battery pack contains: a fuel cell battery; an output voltage conversion means that converts the output voltage of the fuel cell battery according to an output voltage reference value; a fuel storage means for storing the fuel for the fuel cell; and a remaining capacity detection means that detects the remaining capacity of the fuel storage means; wherein the connection means comprises: a power output line for connecting the battery pack and a load and supplies DC power outputted by the by the output voltage conversion means to the load; power supply output terminals for connecting the power output line to power supply input terminals of the load; an output voltage reference value output means that outputs an output voltage reference value, corresponding to the power supply voltage of the load, to the output voltage conversion means; a power supply voltage detection means that detects the output voltage of the output voltage conversion means as the power supply voltage of the load; voltage detection terminals for outputting output of the power supply voltage detection means to a rechargeable batter condition detection terminals of the load; and a battery compatible plug comprising the power supply output terminals connectable to the power supply input terminals of the load, and the voltage detection terminals connectable to the rechargeable battery condition detection terminals of the load; wherein the battery compatible plug has the same shape as the rechargeable battery pack, and is exchangeable with the rechargeable battery pack; and wherein the remaining capacity detection means alters the output voltage reference value for the output voltage conversion means forcibly according to the remaining capacity of the fuel storage means.