You probably mean to ask: What is the self discharge rate of a NiMH battery? The rate of self discharge for any battery depends on the temperature at which it's stored. Stored at 70 degrees F (20 C) NiMH batteries will lose up to 40% of their charge within a month. If they are stored at a higher temperature, they will self discharge at an even higher rate.
General Interest. Erie Canal opens. The Erie Canal opens, connecting the Great Lakes with the Atlantic Ocean via the Hudson River. Governor DeWitt Clinton of New York, the driving force behind the project, led the opening ceremonies and rode the canal boat Seneca Chief from Buffalo to New York City.
The legend of the grand Erie Canal flows as strongly today as it did when it was opened in 1825. Four waterways -- the Erie, the Champlain, the Oswego, and the Cayuga-Seneca -- travel through New York's heartland, gliding past lush farmland, famous battlefields, scenic port towns, and thriving wildlife preserves.