
Recommendation ITU-T L.1221 is a subpart (Part 2: Battery), of a series of Recommendations (the other Recommendations in the series being Recommendation ITU-T L.1220 and Recommendation ITU-T L.1222) on innovative energy storage systems for stationary power systems of telecom/information and communication technology (ICT) equipment used in telecom networks, data centres and customer premises equipment (CPE). [pdf]

Lithium iron phosphate batteries deliver transformative value for solar applications through 350–500°C thermal stability that eliminates fire risks in energy-dense environments, 10,000 deep-discharge cycles that outlast solar panels by 5+ years, and 60% lower lifetime costs than alternatives—enabling 90% self-consumption in residential systems and utility-scale LCOS below $0.08/kWh. [pdf]

To ensure the safe and reliable operation of UPS systems, this guide outlines fire safety measures across extinguishing and alarm systems, electrical and environmental management, equipment selection and installation, and maintenance and emergency response, offering clear and practical guidance aligned with international fire safety standards (e.g., NFPA 72 and NFPA 2001). [pdf]

In the rule, DOE is amending the test procedure for UPSs to incorporate by reference relevant portions of the latest version of the industry testing standard, harmonize the current DOE definitions for UPSs, total harmonic distortion, and certain types of UPSs with the definitions in the latest version of the industry standard, and add a no-load testing condition, as an optional test. [pdf]
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