Battery Drivers [FAST]

"The Unsung Heroes of the Electric Revolution: Battery Drivers"

| Symptom | Likely cause | |---------|---------------| | Stuck at 100% | Driver not reading real SOC register | | Sudden shutdown at 20% | No coulomb‑counter driver, voltage‑only estimation | | Slow charge detection | Missing AC status GPIO interrupt | | Overheating while charging | Missing thermistor readout in driver | battery drivers

Charger IC (BQ24650) → Charge FET (CSD18532) → Battery pack ↓ Protection IC (BQ77905) → Discharge FET ↓ Fuel Gauge (BQ34Z100) → I²C to host "The Unsung Heroes of the Electric Revolution: Battery

Drivers manage the "handshake" between your charger and the device. They ensure the battery doesn't overcharge (which can lead to swelling or fires) and manage "trickle charging" once the battery reaches 80% to 90% to extend the hardware's lifespan. 3. Thermal Management Thermal Management