APC Back-UPS ES 550 Battery Back Up And Surge Protection - Battery (see detail).

Works and functions perfectly fine, has only been used for about 7-9 months

- 8 sockets (All surge protected, 4 have power back up)

- I don’t know how long the battery lasts, as in the few times my power has gone out, the battery had enough to power through until the power switched back on, but the longest its gone is about 20 minutes, powering 2 PC’s and 3 Monitors.

Open to offers