Attempting to read Battery % via Mavros

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I have a quadcopter running a Pixhawk flight controller. I am also running a RPI 4 companion board, and I have a serious of nodes setup for flight and a number of other operations. One node is my information node, were I am collecting all the current data for distribution to other nodes or requests from the user.

I'm attempting to ready the battery status and I'm getting some weird figures.

First, my setup.

I've imported 'BatteryState' from sensor_msg.msg, and set up a subscriber for the topic.

from sensor_msgs..sg import BatteryState

rospy.Subscriber('mavros/battery', BatteryState, self._batteryStatus)

The callback, thus far, is simple. I'm just printing the percentage from the msg that was passed to the callback.

def _batteryStatus(self, msg):
    print("\n")
    rospy.loginfo('INFORMATION -> _batteryStatus()')
    print("\t>>>> {}".format(msg.percentage))

I am getting information, but it doesn't exactly make sense to me. Here is what I'm seeing

[INFO] [1617909365.376757]: INFORMATION -> _batteryStatus()

0.5

[INFO] [1617909365.389045]: INFORMATION -> _batteryStatus()

-0.009999999776482582

[INFO] [1617909367.376466]: INFORMATION -> _batteryStatus()

0.5

[INFO] [1617909367.384906]: INFORMATION -> _batteryStatus()

-0.009999999776482582

as you can see from my code, I'm not calling different data points, yet, the data seems to alternate between two different values.

now if print the entire message I see that there are two different 'Percentage' data points. However, neither of the points seem to be an accurate representation of the actual power. When I took the batter off the quad and placed it on the charger it showed that there was only 8% power on the battery.

Any help or suggestions on how I can view the battery status, specifically percentage of power remaining.