A kinetic energy recovery system uses a motor-generator unit to harvest kinetic energy that would otherwise be lost as heat during braking. This energy is stored in a battery bank or a mechanical flywheel. The engine control unit can then deploy the stored energy to an electric motor attached to the drivetrain, providing a short burst of acceleration.
Heard on the job
The telemetry shows the KERS isn't deploying on corner exit, so check the high-voltage connections on the accumulator.