UPS ? – Uninterruptible Power Supply

I have been in the middle of a set of tournaments when the power flicks off. By the time my computer reboots my stack is blinded away.

Often I will only need the backup for a minute. However, I may need power for 20 minutes or more.

I just need to power my desktop, modem and 2 LCD’s (no printers, etc).

I want to know what UPS specs to look for and would appreciate your help. Thanks.

ICMoney