Think of uninterruptible power supplies (UPS) as a chance to save data and safeguard against damage and injuries. A UPS system provides continuous AC power to equipment during a power outage. The power supply is generally limited and temporary, but it provides time to properly save or backup data and shut down equipment until the main power is restored. UPS Accessories, such as a UPS battery, help to customize and assure continuous service. Products vary by input/output voltage, phase, number of outlets, mounting options and other considerations.