The lifespan of a UPS is about 10,000 hours. That typically translates to five to eight years. If the UPS device lasts eight years, it could run daily for eight hours over that period. Not all uninterruptible power supply devices offer the same lifespan. These small, affordable power units act as a power source for your sensitive electronics in case of a power outage. But will they keep your WiFi running long enough, and if so, do they all perform the same? To answer that question. . Uninterruptible Power Supplies (UPS) are critical components in maintaining the continuity of power to sensitive equipment and systems, ensuring minimal downtime and preventing data loss or hardware damage. The duration for which a UPS can provide power, measured in hours, is a crucial. . Calculate how long your uninterruptible power supply (UPS) will provide backup power based on its VA rating and your equipment's power consumption. Enter your UPS specifications and load details below to estimate runtime during a power outage.