CSN P CEN ISO/TS 23625 This document provides requirements and recommendations for the selection and installation of lithium-ion batteries for boats. It applies to lithium-ion batteries and to battery systems with a capacity greater than 600 Wh, installed on small craft for providing power for general electrical loads and/or to electric propulsion systems. It is primarily intended for manufacturers and battery installers. Original English text of CSN EN Standard. The price of the Standard included all amendments and correcturs.