Priority Mail Flat Rate is a 1 to 3 day shipping service provided by the U.S. Postal Service (USPS) that features one flat rate for delivery of a package or envelope to its destination. The service allows a maximum weight of 70 lbs. or less for each envelope or package.
Ampere definition. Ampere or amp (symbol: A) is the unit of electrical current. The Ampere unit is named after Andre-Marie Ampere, from France. One Ampere is defined as the current that flows with electric charge of one Coulomb per second. 1 A = 1 C/s.
Ampere-hour. An ampere-hour or amp-hour is a unit of electric charge, with sub-units milliampere-hour and milliampere second. One ampere-hour is equal to 3600 coulombs. The ampere-hour is frequently used in measurements of electrochemical systems such as electroplating and electrical batteries.