Define the protected load
List the computer, monitor, router, switch or other equipment that must remain powered. Do not size a UPS only by the desktop label.
Decide the required runtime
A UPS may provide enough time for safe shutdown or longer operation, depending on capacity and load. Longer runtime requires more battery capacity.
Protect critical equipment
Use suitable surge protection and proper electrical installation. Printers with heaters can draw high power and may not belong on a small UPS.
Maintain the battery
UPS batteries age and should be tested and replaced when capacity falls. Keep ventilation clear and document maintenance for business installations.
