Summary

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). This subpart introduces technologies and methods for evaluating, selecting and testing battery systems for defined applications.