John Frederic Daniell

John Frederic Daniell was a 19th-century British chemist and meteorologist known for developing the Daniell cell, an early type of rechargeable battery. This invention used two different electrolytes—zinc sulfate and copper sulfate—to produce a steady electrical current, improving battery reliability compared to earlier models. His work significantly advanced electrical science and practical energy storage, playing a key role in the development of battery technology. Daniell also contributed to meteorology and scientific research, earning recognition for his innovations and dedication to understanding natural phenomena.