Battery Technology for Single Phase UPS Systems: VRLA vs. Li-ion

Battery Technology for Single Phase UPS Systems: VRLA vs. Li-ion

Lithium-ion (li-ion) batteries have been used commercially in various applications for over 20 years. However, up until recently they were not available to the extent that UPS vendors could have the right balance of price, energy density, power, safety, and reliability for single-phase UPS applications.

Advancements in li-ion have been made, however. UPS vendors now have realistic li-ion battery options. Meanwhile, prices have dropped considerably.

The Schneider-Electric publication "Battery Technology for Single Phase UPS Systems: VRLA vs. Li-ion" provides a brief overview of li-ion batteries in comparison to VRLA batteries for single-phase UPS applications. A 10-year total cost of ownership (TCO) analysis is also provided showing li-ion is 53 per cent less than VRLA despite their capital cost premium. The paper also provides an in-depth financial analysis around the li-ion battery.


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