Microcontroller based Compact AH Meter/ Controller is applied in battery capacity testing, battery formation, monitoring of solar cells etc. The Meter/ Controller is ideal electronic instrument for the measurement of AH batteries or any DC source. The Meter/ Controller is based on micro controller and comes with direct reading of AH capacity. Microcontroller based Compact AH Meter/ Controller can work for a rating of 10 A to 2000A and comes with LCD/ LED display.