Add section for UPS

Author: cbrownstein-lambda

content/en/workstations/power-requirements/index.md

@@ -77,3 +77,11 @@ in the picture, below.
 
 On request, a C19-C20 power cord can be substituted for use with power
 distribution units (PDUs) commonly found in data centers.
+
+## Uninterruptible Power Supplies (UPS)
+
+{{% alert title="Warning" color="warning" %}}
+Lambda workstations are high-performance systems and use a large amount of
+power. For this reason, **Lambda workstations can't be used with
+Uninterruptible Power Supplies (UPS, or battery backups)**.
+{{% /alert %}}