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A portable battery charger. The portable battery charger is for charging a battery and comprises a housing assembly including a charging port for supporting the battery during charging of the battery, a portable power source supported by the housing assembly, and a charging circuit supported by the

A portable battery charger. The portable battery charger is for charging a battery and comprises a housing assembly including a charging port for supporting the battery during charging of the battery, a portable power source supported by the housing assembly, and a charging circuit supported by the housing assembly and electrically connectable between the power source and the battery to supply power from the power source to the battery to charge the battery.

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1. A portable battery charger comprising:a housing assembly including a charging port for supporting a battery during charging of the battery;a portable power source supported by the housing assembly, the power source includinga fuel supply, anda device operable to convert the fuel to electricity; a

1. A portable battery charger comprising:a housing assembly including a charging port for supporting a battery during charging of the battery;a portable power source supported by the housing assembly, the power source includinga fuel supply, anda device operable to convert the fuel to electricity; anda charging circuit supported by the housing assembly and electrically connectable between the power source and the battery to supply electricity from the power source to the battery to charge the battery. 2. The charger as set forth in claim 1, wherein the housing assembly further includes a carrying handle engageable by an operator to move the charger to and from a charging site. 3. The charger as set forth in claim 1, wherein the device includes a combustion engine operable to generate electricity to charge the battery. 4. The charger as set forth in claim 1, wherein the fuel supply includes a gasoline fuel supply. 5. The charger as set forth in claim 1, wherein the fuel supply includes a propane fuel supply. 6. The charger as set forth in claim 1, wherein the power source is operable to supply electricity to charge the battery without being connected to an external power source. 7. The charger as set forth in claim 1, wherein the housing assembly includesa power source housing supporting the power source and including a receptacle, anda charger housing supporting the charging circuit and providing the charging port, the charger housing being removably supportable by the power source housing in the receptacle. 8. The charger as set forth in claim 7, wherein the power source includes power source connectors, wherein the charging circuit includes circuit connectors, and wherein, when the charger housing is supported in the receptacle, the power source connectors are electrically connected with the circuit connectors to electrically connect the power source with the charging circuit. 9. The charger as set forth in claim 1, wherein the battery includes battery terminals, wherein the charging circuit includes charging terminals, and wherein, when the battery is supported by the charging port, the battery terminals are electrically connected with the charging terminals to electrically connect the battery with the charging circuit. 10. A combination comprising;a housing including a receptacle;a portable power source supported by the housing and operable to supply power to a battery to charge the battery; anda battery charger includinga charger housing supportable in the receptacle, the charger housing including a charging port for supporting the battery, anda charging circuit supported by the charger housing and electrically connectable between the power source and the battery to supply power from the power source to the battery to charge the battery. 11. The combination as set forth in claim 10, wherein the housing further includes a carrying handle engageable by an operator to move the combination to and from a charging site. 12. The combination as set forth in claim 10, wherein the power source includes a fuel supply, and a device operable to convert the fuel to electricity. 13. The combination as set forth in claim 10, wherein the power source includes a combustion engine operable to generate electricity to charge the battery. 14. The combination as set forth in claim 10, wherein the power source includes a fuel supply. 15. The combination as set forth in claim 14, wherein the fuel supply includes a gasoline fuel supply. 16. The combination as set forth in claim 14, wherein the fuel supply includes a propane fuel supply. 17. The combination as set forth in claim 10, wherein the power source is operable to supply power to charge the battery without being connected to an external power source. 18. The combination as set forth in claim 10, wherein the power source includes power source connectors, wherein the charging circuit includes circuit connectors, and wherein, when the charger housing is supported in the receptacle, the power source connectors are electrically connected with the circuit connectors to electrically connect the power source with the charging circuit. 19. The combination as set forth in claim 10, wherein the battery includes battery terminals, wherein the charging circuit includes charging terminals, and wherein, when the battery is supported by the charging port, the battery terminals are electrically connected with the charging terminals to electrically connect the battery with the charging circuit. 20. A portable battery charger comprising:a housing assembly including a charging port for supporting a battery during charging of the battery;a portable power source supported by the housing assembly, the power source includinga fuel supply, anda combustion engine operable to generate electricity; anda charging circuit supported by the housing assembly and electrically connectable between the power source and the battery to supply electricity from the power source to the battery to charge the battery. 21. The charger as set forth in claim 20, wherein the housing assembly further includes a carrying handle engageable by an operator to move the charger to and from a charging site. 22. The charger as set forth in claim 20, wherein the fuel supply includes a gasoline fuel supply. 23. The charger as set forth in claim 20, wherein the fuel supply includes a propane fuel supply. 24. The charger as set forth in claim 20, wherein the housing assembly includesa power source housing supporting the power source and including a receptacle, anda charger housing supporting the charging circuit and providing the charging port, the charger housing being removably supportable by the power source housing in the receptacle. 25. The charger as set forth in claim 24, wherein the power source includes power source connectors, wherein the charging circuit includes circuit connectors, and wherein, when the charger housing is supported in the receptacle, the power source connectors are electrically connected with the circuit connectors to electrically connect the power source with the charging circuit. 26. The charger as set forth in claim 20, wherein the battery includes battery terminals, wherein the charging circuit includes charging terminals, and wherein, when the battery is supported by the charging port, the battery terminals are electrically connected with the charging terminals to electrically connect the battery with the charging circuit.