A mini-tower Battery Backup/ UPS (uninterruptible power supply) with line interactive topology, the CyberPower Intelligent LCD LX1500GU PC Battery Backup provides battery power and surge protection for desktop computers, workstations, networking devices, and home entertainment systems. The LX1500GU uses Automatic Voltage Regulation (AVR) to correct minor power fluctuations without switching to battery power, which extends battery life. AVR is essential in areas where power fluctuations occur frequently. Two USB 2.1A charging ports provide charging power for portable devices such as tablets, mobile phones, MP3 players, and cameras. The LX1500GU comes with a three-year limited warranty and a $500,000 Connected Equipment Guarantee.