12V Model : CX1215/1225/1235/1250/1280 24V model: CX2415/2425/2440 Input voltage range :90~264Vac Input frequency: 47~63Hz Charging battery type: Lead Acid/Li-ion/Gel/AGM Charging voltage : 12V/24V programmable charging curve 2-stage fan speed control High efficiecny, high reliability Built-in battery rescue function Built-in engine start battery output RS-232 communication interface