The present Recommendation contains the main requirements for evaluating appropriate innovative batteries for stationary use for powering ICT equipment in telecom sites@ active network units and data centres or customer premises with standardized power interfaces in ?C48V@ up to 400 VDC or 12V. Based on the general selection and evaluation method proposed in [ITU-T L.1220]@ the present Recommendation introduces the main battery technologies@ characteristics and the method to select@ evaluate and test battery products adapted to a defined application. This Recommendation describes the selection criteria and possible tests for making the appropriate or optimal choice of battery technology for an ICT stationary application. This includes mechanical performance@ electrical performance@ (voltage@ current@ power and capacity ratings@ efficiency and self-discharge@ etc.)@ environmental performance (temperature range)@ lifetime performance (cycling and calendar life@ tolerance of partial charge and depth of discharge)@ installation@ operation and maintenance complexity (parallel operation)@ safety (risk to and protection of humans and environment@ error and fault tolerance)@ management/monitoring (including anti-theft solution) at battery and cell level and total cost ownership (TCO) assessment. This Recommendation specifies evaluation methods and tests which complement those of existing relevant standards requirements.