The Eaton 9SX constantly monitors power conditions and regulates voltage and frequency. The internal bypass allows service continuity in case of internal fault, a maintenance bypass is also available (as option) for easy replacement of the UPS without powering down critical systems. With a 0.9 power factor the 9SX delivers 28% more power than UPS in its class. It powers more servers than other UPSs with equivalent VA ratings and lower power factors. Stronger, longer battery life: Eaton ABM battery management technology uses an innovative three-stage charging technique that extends battery life by up to 50%. 20SX also provides recommended replacement date for batteries.