For uphill and acceleration, the batteries chip in with supplementary power and regenerative braking recovers kinetic energy during braking and downhill driving, converts it into electricity and stores it in the batteries.
(the batteries chip in with supplementary power and regenerative braking recovers kinetic energy during braking and downhill driving; converts; it; into electricity and stores it)
the batteries chip in with supplementary power and regenerative braking recovers kinetic energy during braking and downhill driving
converts
it into electricity and stores it