i was reading into the fine print of the EATON XB pdf. in the 500k cycles, if i calculate the cycles, the charge up and discharge @ 15A means that the capacitors are suppose to experience a power dissipation of only 0.06W in order to get to a meaningful lifespan of 500k cycles.
i also saw the same cycle specs in maxwells, these calculate out to about 0.1W.
both seem to imply that temp rise should not be over 1Celcius for max lifespan?
(there is also similar spec in Vishay 85C rated SC, but they limited charging to 3A)
which then seem to also suggest, the large number of base pins is likely for better heat dissipation/cooling?
jus wondering, what ballpark kind of temperature rise is yours in the UPS doing when it is cranking? (if you had a chance to measure?)