“I have two dell computers and want to use battery back up in case of power outage my laptop is a dell Inspiron 7373 and the power cord says 45 watts the desktop is an Inspiron 5488 aio that cord says 90watts what do I need for 20- 30 minutes”
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I have an APC BACK-UPS PRO 1500VA/900 WATT. before replying to this I unplugged my backup to see how long I could run my desktop computer and the 24 inch TV I'm using for a monitor. It ran for an hour and 15 min down to 14 min left. The time on the backup was going down faster than actual time though, so I don't think it would have lasted another 14 minutes.
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