CyberPower CPS600E-DE Emergency Power Systems provides backup power when regular systems fail for a wide range of applications including household appliances, office systems, banking & retail, and industrial sites. It provides noiseless, fuel-less, and clean pure sine wave output with adjustable Automatic Voltage Regulation (AVR), making it a greener and better solution over traditional generators. The Emergency Power Systems is also generator-compatible making it suitable for existing installations. It can accommodate unlimited number of batteries for additional runtime capacity, and the high charging current allows quick recharging up to five times faster. Users can access information of power/battery conditions and configure advanced settings, including alert of potential power problems and switching mode at the push of a button.