Charge Wizard 4-stage charging system built-in dramatically increases battery life.Fit Type: Universal Fit. This converter/charger will not boil the battery. Input Voltage Frequency- 50-60 HZ. Intelligent way to charge and maintain your RV battery. Easy to install. Operating Temperature- 0-50C. Replaces these converter sections: Parallax/Magnatek 6355, Parallax 7355, Parallax 8355, Parallax #7155, and WFCO 8955.