I bought a 1000PFCLCD model a little less than two years ago. About two weeks ago I experienced a brownout which lasted all but 2 seconds. I have my PC connected to the UPS which draws 90-100 watts while idling. During the 2 seconds brownout I noticed the battery discharged from 100% to 62%. I figured the battery was failing so i claimed warranty with CyberPower. They had me run some tests with the unit fully charged, disconnected from the outlet with a light load. It was still discharging within seconds. The same thing happened when running a self-test via the Power Panel software. It takes about 3 seconds to run the test and it discharged the battery from 100% to 62-65% in those 3 seconds. CyberPower sent a new battery. I swapped the battery and let the new battery charge for 8 hours. The problem still persists. Is the unit itself failing? Anything else I can try? Thanks in advance.