APC's Smart UPS Series protects your critical data with reliable, uninterruptible power. The SMT3000RMI2U in a rack-mount housing offers 3000 VA capacity with a maximum output power of 2700 watts. In the event of a power failure, the device guarantees an independent power supply for 3 to 11 minutes (100%/50% load). On its LC display, the UPS always shows the most important characteristics such as operating mode and efficiency, voltage, frequency and energy consumption. A clearly arranged menu ensures intuitive operation of all device functions. A USB and a serial RS-232 interface are available for computer management. With the SmartSlot you can extend the device functions according to your needs. The sealed lead battery with gelled electrolyte is completely maintenance-free. The UPS calculates the expected service life of the battery and also detects premature signs of aging through regular battery tests. The voltage applied during the charging process is adapted to the temperature of the battery and thus enables particularly gentle charging, which in turn has a positive effect on the service life.