Event of 1899: Waldemar Jungner files the patent application for the first alkaline battery and (1898–1899)

Waldemar Jungner, a Swedish inventor, invented the nickel-iron, nickel-cadmium, and rechargeable alkaline silver-cadmium batteries in 1898, and the first Ni-Cd battery is credited to 1899. The legacy row's claim of a 1899 patent filing with Swedish patent number 11132 is not supported by the supplied passages, and the 1898 invention year and 1899 Ni-Cd creation year are not reconciled by the evidence.

Episodes

Background and detail

Background. Ernst Waldemar Jungner was a Swedish inventor and engineer active in the late 19th century. He is credited with inventing multiple battery technologies, including the nickel-iron, nickel-cadmium, and silver-cadmium batteries. These developments occurred primarily in 1898, establishing the foundation for his later commercial activities and patent filings.

Invention Timeline. Jungner invented the nickel-iron, nickel-cadmium, and silver-cadmium batteries in 1898, according to one source. A separate source states that the first Ni-Cd battery was created in 1899. These two years are not reconciled by the supplied evidence, and the legacy row's specific patent filing date and patent number 11132 remain unsupported by the passages.

Commercial Context. In 1900, Jungner started the firm "Ackumulator Aktiebolaget Jungner". This commercial venture followed the battery inventions of the preceding years. The supplied passages do not connect the legacy row's claimed 1899 patent filing to the 1900 founding of the firm, and the specific patent details remain unverified.

People involved

Sources

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.