Hi!

I have a 700VA UPS that has dead batteries... I'm about to purchase
replacement batteries but got to thinking..
The batteries this UPS takes are 6v 12aH and there are 2 of them running in
series = ~12v together (13+ realistically)

I can replace the 2 batteries running in series, but was thinking about
extending the runtime of the UPS by running 4 batteries.. (2 sets of 2
running in parallel)
Or should I just get 2 larger 6v batteries with more aH rating instead? Of
course they might have to be outside the UPS instead.
Or I could get 1x12v sealed lead acid battery instead.

I realize that a larger battery might not charge well or properly on this
UPS.

How might this affect the UPS circuitry and invertor?
I'm only trying to extend the run time and not the capacity of the UPS.

IBM Office Pro 700 (I've actually got the older serial port model)
http://www.tripplite.com/products/pr...productID=2801

Anyone have any feedback/thoughts on this?

TIA