traction battery

plural traction batteries

1. A rechargeable battery used to power the electric motor(s) of a battery electric vehicle (BEV) or hybrid electric vehicle (HEV).

   At Derby, the '165' will be fitted with Magtec traction motors, range extender engines and traction batteries.

   2020 May 6, “Network News: '165' at Derby for hybrid conversion”, in Rail, page 15

   1 more example

   In order to avoid the use of shunting locomotives at the ports a 230 amp./hr. traction battery is provided so that the vans can move under their own power on to the necessarily unelectrified quayside lines.

   1959 November, “Talking of Trains: S.R. Motor Luggage Vans”, in Trains Illustrated, pages 523, 526