Hey folks. I recently wired my SmartUPS 1400 to two Optima Yellow Tops. (Not shown is the 60A fuse between them for great justice) Unfortunately, despite three run-time calibrations and the three (yes three) actual power outages today alone, the UPS still believes that at full capacity there are only four minutes of runtime. These batteries are brand new, shrink wrapped, off the shelf. The proprietor of the ricing store where I bought them told me someone from Optima comes and replaces the ones sitting on the shelf with fully charged batteries every three months. According to apctest from the apcupsd package when the UPS is running on the batteries the voltage drops from 28.01 to just over 25 very quickly, as does the battery level percentage. Sure enough, after four minutes I'm looking at one blinking light on the front panel gauge - but 20 minutes later the thing is still running about a 20% load. Here's some sample output of apctest while the batteries "recover" from the last outage: Code: Batt level percent: 060.0 Batt voltage: 28.01 UPS Load: 035.8 Line freq: 60.00 Runtime left: 0002 The odd thing is the battery voltage is 28.01 when the capacity is at 100% It's also 28.01 when the capacity is at 40% - on the way up. At 40% on the way down it's closer to 25. Is it possible my UPS has gone screwy? One of my colleagues has modded half a dozen UPSes like this and I did a fair share of googling before attempting it myself - this seems to be a straightforward plug-and-play operation for everyone else. I'm trying to avoid running out and buying a stand-alone car battery charger and load tester. If anyone has any insight as to what these symptoms could be indicating I'd really appreciate it. Thanks!