UPS/Battery backup question - I need a battery backup power source that will last as long as possible. My load is only 30w, so I understand that even a small UPS will power it ok - but I need to maximize the time that the UPS will continue to keep it going. [more inside]
posted by Xhris on Aug 20, 2010 - 8 answers

I would like to learn more about large-scale UPS systems, particularly the battery strings used in traditional RBOC/Telco applications. These are the sort of beasts that use huge strings of 6V 220aH deep cycle batteries, or even large numbers of 2V 400aH batteries on very strong earthquake-resistant shelving wired up to create a 48V mega-battery. Can anyone point me to the most definitive reference materials on the subject?
posted by thewalrus on Dec 17, 2009 - 4 answers

I have a 850va 425w UPS battery backup with only 2 outlets. There is a small server, speakers, home theater projecter, lcd monitor, and router connected to a power strip. The power strip and a desktop plug into the UPS. Is this setup safe? I am concerned about short 1-second interruptions caused by bad electrical connections rather than power outages.
posted by lpctstr; on Apr 25, 2009 - 8 answers

Backing up an HP laptop for the ignorant. Halp? [more inside]
posted by CwgrlUp on Dec 6, 2008 - 7 answers

Does anyone know where I can find the operating software and a manual for an HP Powerwise 2100 Battery Backup? APC bought HP's battery backups unit in 1994, but this unit seems to work great. I want to control it from my PC but have no software and no instructions. I've visited all of the manual sites and software download sites I can think of.
posted by CollectiveMind on May 27, 2008 - 1 answer