mark lewis wrote in a message to JIM HOLSONBACK:

 JH> The APC 420 Smart UPS Pro unit I have here just uses a 12V 7AH
 JH> battery - - just 84 watt-hours of power.

 ml> wow, that's a "little" one > all mine
are 650s and up with two
 ml> 1000s and an 1100...

 ml> FWIW: yes, the APC UPS' are what i'm wanting to either enhance,
 ml> extend, or replace... but $$$ are a concern...

It was APC that told me you couldn't extend the operating time on their units...

Nor would they provide me with any technical specs,  schematics,  or any
other info,  for that matter.

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