The charger monitors top side MOSFET current by high-side sense FET. When peak current exceeds MOSFET limit, the charger turns off the top side MOSFET and keeps it off until the next cycle. The charger has a secondary cycle-to-cycle overcurrent protection. The charger monitors the charge current, and prevents the current from exceeding 160% of the programmed charge current. The high-side gate drive turns off when either overcurrent condition is detected, and automatically resumes when the current falls below the overcurrent threshold.