page_title: Waldemar Jungner
hierarchical_section_title: Waldemar Jungner
caption_attribution_description: English: Swedish inventor Waldemar Jungner Svenska: Den svenske ingenjören och uppfinnaren Waldemar Jungner
context_page_description: Ernst Waldemar Jungner was a Swedish inventor and engineer. In 1899 he invented the nickel-iron electric storage battery, the nickel-cadmium battery and the rechargeable alkaline silver-cadmium battery. As an inventor he also fabricated a fire alarm based on different dilutions of metals. He worked on the electrolytic production of sodium carbonate, and patented a rock drilling device.
context_section_description: Ernst Waldemar Jungner (June 19, 1869 – August 30, 1924) was a Swedish inventor and engineer. In 1899 he invented the nickel-iron electric storage battery (NiFe), the nickel-cadmium battery (NiCd) and the rechargeable alkaline silver-cadmium battery (AgCd). As an inventor he also fabricated a fire alarm based on different dilutions of metals.  He worked on the electrolytic production of sodium carbonate, and patented a rock drilling device.
caption: Waldemar Jungner
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