Section 268B | Electrically-propelled vehicles
From legislation.gov.uk
For the purposes of this Part a vehicle is electrically-propelled only if—F1
(a)it is propelled solely by electrical power, andF1
(b)that power is derived from—F1
(i)a source external to the vehicle, orF1
(ii)an electrical storage battery which is not connected to any source of power when the vehicle is in motion.F1