■ They provide a long servicelife, minor maintenance requirements, outstanding resistance to electrical and mechanical abuse, excellent charge retention, a long shelf life and long operation over a wide temperature range. > ■ The junction between thelid and the container isthermo-welded, ensuring good mechanical and electrical resistance. > ■ Flip top vents assure an easymaintenance. > ■ Translucent polypropylenecontainers allow visibility of the electrolyte level, hence facilitating maintenance in stationary applications. > ■ The products are qualifiedaccording IEC 60 623. > 1 size="-1">