Ampere Hours (Amp-Hours, AH) An ampere-hour or amp-hour (symbol AH) is a unit of electric charge. One ampere-hour is equal to 3600 coulombs (ampere-seconds), the electric charge transferred by a steady current of one ampere for one hour. Most electroplating cycles are timed on amp-hours. To put it another way, Amp-Hours is the integration of current over time. For example: if a electrolating cell is running at 50 amps, then the Amp-Hours accumulated after 60 minutes is calculated as follows: 50 Amps * 1 Hour = 50 Amp-Hours » More Electroplating Terms |