Unlike earlier generation 9100 Series converters, 9200 Series converters have the Charge Wizard charging module built in so you don't need to buy any add-on accessories for efficient battery charging.
The Charge Wizard is a microprocessor-controlled device integrated inside the converter housing. It constantly monitors your RV battery, and then automatically adjusts the converter output voltage based on its charge status. This voltage variation is essential for fast recharging and property battery maintenance. For more information, click on the Field Notes tab above.
Other converters run at a steady 13.6 VDC which is just what you need to power the 12-volt systems in your trailer. The problem is, 13.6 volts isn't the most efficient way to recharge a low battery...and it isn't the optimum way to store a battery. The 9200's Charge Wizard makes the converter an intelligent battery charger that will safely and rapidly recharge a discharged battery and then maintain it properly.
It does this by first selecting the Boost Mode (14.4V) of operation to rapidly charge the battery most of the way. Once the battery reaches 90% of full charge, the Charge Wizard automatically selects the Normal Mode (13.6V) to safely complete the charge. The Storage Mode (13.2V) is automatically selected after 30 hours of non-use of the 12-volt RV electrical systems. The lower charging voltage in the Storage Mode of operation reduces battery gassing and water usage, while maintaining the charge. Every 21 hours when the system is operating in the Storage Mode, the Charge Wizard will automatically switch to the Desulfation Mode of operation. The Desulfation Mode increases the charging voltage up to 14.4 volts for 15 minutes. This increased voltage mixes up the battery electrolyte and prevents battery stratification and the resulting problems of battery sulfation.
The chart below shows how the 9200's Charge Wizard moves from one mode to the next over time.
BATTERY RECHARGE CURVES WITH CONVERTER OUTPUT VOLTAGE SET AT 14.4, 13.6 AND 13.2-VOLTS
The chart above shows the amount of time it took a 55 amp Inteli-Power converter set to three different output voltages to recharge a 125 AH (Amp Hour) battery after it was fully discharged to 10.5-volts.