In one example, a circuit includes a first integrated circuit and a second integrated circuit. The first integrated circuit is configured to detect a first battery voltage that is associated with a first battery cell and output a representation of the first battery voltage. The first integrated circuit is further configured to detect a second battery voltage that is associated with a second battery cell that is connected in series with the first battery cell and output a status signal indicating whether the second battery voltage satisfies a first threshold. The second integrated circuit is configured to detect the first battery voltage and output a status signal indicating whether the first battery voltage satisfies a second threshold. The second integrated circuit is further configured detect the second battery voltage and output a representation of the second battery voltage.