The circuit was built around the LM317 along with one resistor and one trimmer to construct a LiPo calibrator for balancing the element in order to minimize errors in the cut-off threshold calculation.
The device is used for the purpose of charging different types of battery cells which include NiCd, NiMh, LiPo, and SLA type with the customization battery main parameters, battery advanced parameters, and charger parameters.