What is Ampere Hour Meter?

An ampere-hour or amp-hour is a unit of electric charge. One ampere-hour is equal to 3,600 coulombs (ampere-seconds), the electric charge transferred by a steady current of one ampere for one hour. Similarly, one ampere-minute is a steady current of one ampere flowing for one minute. Ampere-hour is frequently used in measurements of electrochemical systems such as electroplating and electrical batteries. Measuring Ampere Hours for Electroplating Plating thickness is directly proportional to the integration of current over a period of time.

A preset Amp-Hr or Amp-Min limit ensures precision repeatability and uniformity of the plating thickness guaranteeing quality and avoiding wastage of material. Time controlled dosage pumps allow automation. Hence where there is a criticality of thickness of plating and uniformity, Ampere Hour/Minute Meter is the solution. Hence, for precision electroplating applications like gold, silver, platinum etc., Amp Hour Meter is a necessity.

Measuring Ampere Hour for Battery testing The amp-hour is a unit of battery energy capacity, equal to the amount of continuous current multiplied by the discharge time that a battery can supply before exhausting its internal store of chemical energy. A battery with a capacity of 1 amp-hour should be able to continuously supply a current of 1 amp to a load for exactly 1 hour, or 2 amps for 1/2 hour, or 1/3 amp for 3 hours, etc., before becoming completely discharged. In an ideal battery, this relationship between continuous current and discharge time is stable and absolute, but real batteries don’t behave exactly as this simple linear formula would indicate. Therefore, when amp-hour capacity is given for a battery, it is specified at either a given current, given time, or assumed to be rated for a time period of 8 hours (if no limiting factor is given).