What is a Lithium-Ion battery backup UPS?
Uninterruptible power supply, or UPS, is a device that provides power backup to IT equipment when power completely fails or drops low enough. Some type of uninterruptible power supply provide just enough time for a computer to save what the user is doing and power down while some can provide electricity for over an hour.
Traditional UPS are manufactured with lead-acid(or VRLA) batteries. Lithium-Ion battery technology has only been around since the 1980's. It has only been in the past two decades that the technology has improved enough to allow smaller businesses and IT solutions organizations to implement in everyday applications.

Vertiv™ Liebert® Lithium-Ion UPS GXT5 Lithium-ion UPS 5000 - 10000 VA, 120V/208V

Vertiv™ Liebert® PSI5 Lithium-Ion UPS
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What are the benefits and features of the Liebert GXT5 UPS
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High Power Factor (1.0)
More usable power enables more connected load saving space and costs.
Hot-Swappable, User-Replaceable Batteries
Increase product life and reliability with batteries that can be easily replaced without disrupting power to connected equipment.
Efficiency (up to 98%) in Active ECO mode
Superior protection with maximum efficiency
Colored graphic LCD with Gravity Sensitive Orientation
User-friendly interface provides insight to UPS status for easy installation, configuration and operation.
High Power Factor (1.0)
More usable power enables more connected load saving space and costs.

Battery Cabinets with Auto-Detection
Be confident the UPS is set up correctly to report available runtime when used with up to eight external battery cabinets.
Product Warranty
Comprehensive coverage through a standard two-year advanced exchange warranty.
Compact rack/tower design
Space-saving UPS provides rack space optimization and flexible installation.

Wide Input Voltage Range
Prolong battery life by allowing the UPS to maximize the use of the utility power before transferring to battery
Efficiency (up to 95%) in Online Mode
Energy Star 2.0 certification. Higher efficiency means an optimized energy management and lower heat dissipation, for energy savings and improved reliability.
Learn the advantages of using Lithium-Ion batteries in Single-Phase UPS Applications.