- Overcurrent protection
- Overcharging over discharging protection
- Over-voltage, under-voltage
- Under temperature
- Switch to shut off the battery
- Balanced charging
- Communication with system (can? I2C?)
    
    - Cell voltages
    - State of Charge (SoC)
    - State of health (SOH) capacity compared to initial capacity
    - Temperatures
    - Current
    - State of Safety (any safety indication: combination of SoC, SOH, temperatures, currents, etc.)
    - Energy delivered since last charge
    - Internal impedance --> can be used to estimate when to replace battery
    - Coulomb counter (how much charge delivered so far and how much is stored?
    - Total number of cycles