Surge Protectors and UPS Units APC DL7 6-Outlet Surge Suppressor. . . . . . . . . . . . . . . . . .  12.00 APC 350VA UPS Battery Backup . . . . . . . . . . . . . . . . . . . .  59.00 Surge suppressors provide basic protection against voltage spikes (surges) that can damage electronic components. All but the most basic units will come with an equipment replacement guarantee. For the highest level of protection, choose a UPS (Uninteruptable Power Supply). Essentially, it is a surge protector which has an integrated battery. In addition to power surges, it also protects against brown-outs, power flickers and complete power outages. Battery power duration is dependent on the equipment you have plugged into it, and the VA rating of the UPS. The 350VA model can, under most circumstances, provide 20 minutes of battery power during a power outage.