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

Claim 5:
6. The device of claim 5, further comprising:
a load coupled to said positive terminal of said first battery and said second output terminal of said charger circuit,
wherein said plurality of modes further comprises a two-battery-in-series charging mode, wherein in said two-battery-in-series charging mode, said switch control circuitry turns off said first and second switches, and turns on said third switch such that said first and second batteries are charged by said input power, and
wherein said two-battery-in-series charging mode comprises a plurality of sub-modes, wherein in a first sub-mode of said sub-modes, said controller disables said charger circuit, and enables said charging path to deliver said input power to charge said first and second batteries via said first output terminal, and to power said load via said positive terminal of said first battery.