https://eco-sun.com.ua/shop/battery-balancer
https://www.victronenergy.ru/upload/documents/Manual-Battery-Balancer-RU.pdf
battery balancer
https://hackaday.io/project/20825-low-cost-non-dissipative-active-battery-balancer
This cell balancer will transfer electrical charges from a strong cell to a weak cell. Ideal for electric vehicles.
low costbattery balancernondissipativeactive