9100 Series Intelli-Power Converters provide safe, reliable, filtered DC power to all 12-volt lighting and appliance circuits. The built-in Total Charge Management System (TCMS) allows for easy addition of the optional Charge Wizard, a microprocessor-controller that constantly monitors the RV battery status and automatically selects one of the four charging modes: Boost Mode - (14.4) to quickly bring the battery to 90% of full charge. Normal Mode - (13.6) safely completes the charge. Storage Mode - (13.2) automatically activates after 30 hours of non-use. Desulfation Mode - (14.4) for 15 minutes every 21 hours to prevent battery stratification and sulfation (the leading cause of battery failure. 80 Amp