1, Floating charge working principle: when the battery is in full state, the charger will not stop charging, but still providing constant float voltage and small float current to the battery. If the charger stop charging, the battery will natural discharge, so using floating charge can balance this natural discharge, extend battery life, and ensure the battery in groove, small UPS usually adopt this charge mode.

2, Equalized charging working principle: charge the battery with specified current in specified time ,charge quickly. It is a charge mode that the professional maintenance personnel always use to maintenance battery, this mode can also activate the battery chemical properties.
Note: The intelligent battery charger can automatic exchange floating charge and equalized charging according to the battery working state ,and give full play to the advantage of floating charge and equalized charging , realize fast charging and extend battery life.