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Battery discharge time depending upon load
This article contains online calculators that can work out the discharge times for a specified discharge current using battery capacity, the capacity rating (i.e. 20-hour rating, 100-hour rating etc) and Peukert's exponent.
Polynomial power expansion
The calculator expands n-th power of a given polynomial.
Modular exponentiation
The calculator performs modular exponentiation of big numbers.
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