Continuing my series on the history of batteries, we now more on to batteries with nickel-based electrodes.

1899 saw the development of the nickel-cadmium battery by Waldemar Jungner. He also experimented with a nickel-iron chemistry that he never commercialized himself, but was used extensively in the early electric car industry after its commercialization by Thomas Alva Edison in 1901.  When electric cars fell out of favor, the more expensive nickel-iron battery was replaced by the cheaper lead-acid for automotive applications. It would be some time before the nickel-cadmium battery returned, this time to run power tools and electronics in the latter half of the 20th Century.

• NiMH
•  Nickel-hydrogen
•  Electrochem