BQ24295: how do I verify whether or not the battery is being charged?

Hello Davido,

There's couple methods available to check whether the device is in the Charging state:

• Using the STAT pin as an indicator: during charging, the STAT output will be pulled LOW. If using the EVM, the STAT led should be on during this time.
• Reading REG08[4:5]: these 2 bits are the charger status bits. A values of 10b indicates Fast Charging, 01b indicated pre-charging. 
• During charging, you can use a sense resistor in series with the battery to measure the current flowing into it. (10mOhms should be good)
• Log the charge cycle: if a gas gauge is available in your system, you can use it to log the voltage/current going into the battery.
• Check the output current of your input. This might be hard if using an USB port (like your application) since you would need to sever the USB cable to connect either a sense resistor or an ammeter.
• If everything else fails, monitor the battery voltage and see if it rises over time. How fast will depend on the charge current/capacity of the cell.