AON1500RM UPS online ADVICE ON 1.5K RM- built in super smart charger shorten 50% of charging time   Double conversion on line design Wide voltage range (110-300VAC) at 230 VAC Advanced Eco mode Wide freqency rang (40-70Hz) SNMP cord/dray contact cord (optional) External battery connector Epo function 945 joule range protection Bypass Output power factor 0.9 Frequency converter mode Programmable power management outlets Hot swappable battery design 3 years warranty for electronics and 2 years for battery