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The APC Back-UPS 500 was purchased to provide protection against mains failures for our broadband router, cordless phone system and Freeview digital recorder. After the recommended initial 10 hours charge off-load it was installed and tested with the above all connected and powered up as normal. It had no problem providing power for more than 30 minutes before I switched the mains supply back on. It could have supplied power for longer but 30 minutes is likely to be sufficient to cover most power failures with ease.
Verified purchase: Yes | Condition: New