Patent ID: 11909251
Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A method of charging a battery pack, the method comprising:
receiving and supporting, by a battery connector of a housing, the battery pack, the battery connector including electrical terminals that engage electrical terminals of the battery pack, and a mechanical coupling that engages a mechanical interface of the battery pack;
receiving, by an engine, propane;
powering an alternator with electrical current supplied by the battery pack coupled to the battery connector to start the engine;
inhibiting generation of a spark by the engine while the alternator is powered by the battery pack until a speed of the alternator is greater than a threshold;
driving an output shaft of the engine;
inducing an electrical current in stator coils of the alternator by the driving of the output shaft;
providing the electrical current to an electrical circuit in the housing;
determining, with the electrical circuit, that the battery pack is coupled to the battery connector; and
charging, with the electrical circuit, the battery pack.