Battery Management System Using Relay Contactor by Arduino Controller for Lithium-ion Battery

Currently, almost every lithium-ion used in many electronic products has new capabilities. When the battery's capacity is too large or insufficient, the battery's performance will be damaged. A battery management system (BMS) is currently order from China and other countries. This is expensive, thousands of, and cannot be modified. This research aims to design and develop an NMC18650 lithium-ion battery used in the battery management system (BMS) 3 cells of 12 Vdc can provide the highest circuit of 2000 mAh as a microcontroller to program according to the configuration of researchers. In this study, the discharge test's effect was 0.5A. The results show that the critical point decreases at 2.8 Vdc This battery management system will lower the discharge voltage of any battery by 3 Vdc To prevent danger from occurring in the battery.