The Honda EV Plus was an experimental electric vehicle which was the first battery electric vehicle from a major automaker that did not use lead acid batteries. Roughly 340 EV Plus models were produced and released. Production of the EV Plus was discontinued in 1999 after Honda announced the release of its first hybrid electric vehicle, the Honda Insight.

A nickel–metal hydride battery is a type of rechargeable battery. The chemical reaction at the positive electrode is similar to that of the nickel-cadmium cell (NiCd), with both using nickel oxide hydroxide (NiOOH). However, the negative electrodes use a hydrogen-absorbing alloy instead of cadmium. NiMH batteries can have two to three times the capacity of NiCd batteries of the same size, with significantly higher energy density, although only about half that of lithium-ion batteries.