Thread: Hacking UPS
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William R. Walsh
 
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Hi!

I have seen some Tripp-Lite NetUPS (?) units that have an external plug for
an external battery.

Theoretically, if you could get the connectors and do a safe job of wiring
them in and mouting them in the case, any UPS could have the ability to
accept an external battery.

I've usually been served well by UPS units that I picked up for free with
dead batteries inside. I just wire a large battery up and fashion a wooden
case or shelf for the entire unit and go from there. I've never had any
problems with doing so, but I would recommend supervising a newly converted
UPS to be sure it will operate correctly. Most recently I got some BIG
sealed gel-cell batteries that were almost new from a big old Tripp-Lite UPS
that blew its top in a big and smoky way. I used them for a backup lighting
system--a small APC UPS is wired to one of the two batteries and then
plugged into two 60 watt lamps. It's enough to get out of a dark basement
when the lights go off at night.

http://greyghost.dyndns.org/ups.jpg - 62.8 KB / 1024x768

William