Battery-powered bell still rings after 182 years
2 min readOct 25, 2022
The Oxford Electric Bell is an experiment showing the longest surviving non-recharged battery. After 182 years, it still powers a pair of bells that ring twice a second.
In 1840, physicist, clergyman, and professor Robert Walker purchased the device to add to his collection. His notes indicate the experiment was set up in 1840, though a later note suggests it was constructed…