Different wireless device types define low and critical battery state voltage levels independently.
| Device Type | Low Battery | Critical Battery |
|---|---|---|
| Control | 4.6V | 4.3V |
| NDE | 4.5V | 4.0V |
| LE | 4.5V | 4.0V |
| XE360 | 4.7V | 4.5V |
6.0+ volts is considered to be the maximum value, or 100%.
To calculate battery percentage:
percentage = (batteryVoltageOrMaxPossible – criticalVoltage) / (maxBatteryVoltage – criticalVoltage) * 100