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Bradley,
I recommend that you talk to the Eaton people who make the Powerware UPS
to IBM's specifications for the System i.
Eaton's batteries have a 5-year warranty and last twice as long as other
UPSs because they recharge the battery with a technique (ABM technology
)that doubles its life.
The Eaton rep told me that they make
http://www.powerware.com/UPS/Products.asp
http://www.powerware.com/FAQManager/afmfaqs.asp
http://www.powerware.com/UPS/9125_UPS.asp
Increases battery life (compared to trickle-charged systems) and
optimizes battery recharge time through ABM(r) technology, resulting in
more up-time and fewer battery replacements
The lead-acid batteries typically used in a UPS are considered viable as
long as they can maintain backup times of at least half that of new
batteries. Virtually all other UPSs on the market today have batteries
that are constantly trickle charged. Those batteries reach the end of
their useful life in less than half the time of batteries that are
charged using ABM. ABM uses a three-stage charging technique that not
only doubles battery service life, but also optimizes battery recharge
time and provides up to a 60-day advanced notification of the end of
useful battery life.
midrange.com
