batteries - Inverter charger doesn't have EQUALIZATION feature for charging battery. What will be impact on battery life and backup? - Electrical Engineering Stack Exchange
How to make battery equalization with old off-grid inverters - Voltacon Solar Blog
How to Perform an Equalization Charge on Your Inverter Batteries.
Batteries | Free Full-Text | Quantitative Design for the Battery Equalizing Charge/Discharge Controller of the Photovoltaic Energy Storage System