Tripp Lite by Eaton SmartPro Advanced User Guide 614-40195—Rev 01 35Table 23. Replacing the Internal Battery Steps (Continued)3 - Remove the metal protection cover in front of the battery (three screws).4 - Pull the plastic tab to remove the battery pack and replace it.Take care not to reverse the polarity + (red) and - (black) when connecting the batteries as this will destroy thedevice.TTeessttiinngg NNeeww BBaatttteerriieessTo test new batteries:1. Charge the batteries for 48 hours.2. Press any button to activate the menu options.3. Select "CONTROL" then Start battery test. The UPS starts a battery test if the batteries are fully charged,the UPS is in Normal mode with no active alarms, and the bypass voltage is acceptable. During the batterytest, the UPS transfers to Battery mode and discharges the batteries for 10 seconds. The front paneldisplays "BAT TESTING".66..55 RReeppllaacciinngg tthhee UUPPSS EEqquuiippppeedd wwiitthh aa HHoottSSwwaapp MMBBPPTable 24. Replacing the UPS Equipped with a HotSwap MBP StepsThe HotSwap MBP module makes it possible to service or even replace the UPSwithout affecting the connected loads (HotSwap function).Maintenance1. Set switch (45) to Bypass position. The red LED on the HotSwap MBP modulegoes ON, indicating that the load is supplied directly with AC input sourcepower.2. Stop the UPS by pressing the button on the UPS control panel. LED (43)"UPS ON - OK to switch" goes OFF, the UPS can now be disconnected andreplaced.UPS Maintenance