Automated battery charger calibration fixture using Holtek’s ASSP MCUs. Link here (PDF)
Power chargers for electric bicycles, electric motorcycles and power tools, etc., are all calibrated before delivery, thereby correcting any charging parameter drifts due to external component tolerances. This will ensure the output voltage and current conform to their specifications. However, traditional applications are calibrated manually in production by using variable resistors, which reduces production efficiency as well as increasing manpower, thus increasing manufacturing costs.