It was invented by an Irish chemist, Dr James J. Drumm (1897-1974)<ref>[Famous Irish Chemists: James J. Drumm</ref> and installed in a railcar in 1932 for use on the Dublin-Bray line. It was apparently successful and it is not known why the idea was not further developed at the time.
The battery is still not commonly found in the mass market, but they are considered as the next generation batteries used for high drain applications, and is expected to replace lead-acid batteries because of their higher energy to mass ratio and higher power to mass ratio (up to 75% lighter for the same power), and are relatively cheap compared to nickel-cadmium batteries (expected to be priced somewhere in between NiCd and lead-acids, but have twice the energy storing capacity).
2Ni(OH)2(s) + Zn(OH)2(s) ↔ 2Ni(OH)3(s) + Zn(s)
- Powergenix - Developer and Manufacturer of nickel zinc batteries
- eVionyx - Developer and manufacturer of NiZN and Zinc Air batteries
- eVionyx Taiwan - Taiwan manufacturer of eVionyx products