Metrics Explained

The metrics in this chart come from the power supply driver in the kernel.
Energy Start
The amount of energy in mW the battery contained.
Energy Used
This is difference between the "energy_now" measurements at the start and end of the test. It represents the actual energy that was consumed.
Computed Energy
We can multiple the "charge used" by an estimate of the voltage:
end_voltage + 0.5 * abs(start_voltage - end_voltage)
to make a sanity check on the "energy used" metric. If this value has a >1% difference, then we mark it so you'll know something is inconsistent.
Charge Start
The amount of charge (in mA) reported by the battery at the beginning of the test.
Charge Used
The difference of the "charge_now" metric at the start and end the test.