Patent ID: 11955821
Assignee: O2MICRO INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 4:
5. The device of claim 1, further comprising:
a charging path comprising: a first input terminal coupled to said connection interface, and a first output terminal coupled to said positive terminal of said second battery and coupled to said positive terminal of said first battery through said first switch, wherein said charging path is configured to deliver at least a part of said input power from said first input terminal to said first output terminal;
a charger circuit comprising: a second input terminal coupled to said connection interface, and a second output terminal coupled to said positive terminal of said first battery and coupled to said positive terminal of said second battery through said first switch, wherein said charger circuit is configured to convert at least a part of said input power at said second input terminal to regulated power at said second output terminal; and
a controller, coupled to said charging path and said charger circuit, that selectively enables at least one of said charging path and said charger circuit.