SITOP pure lead battery module 24 V/2.5 Ah with maintenance-free sealed lead batteries for SITOP DC UPS module 6 A and 15 A The maintenance-free battery modules with pure lead batteries are an important component of DC UPS systems. In combination with a 24 V power supply and a DC UPS module, they enable the buffering of power outages lasting up to several hours. For longer buffer times, up to six battery modules can be connected in parallel. The battery modules are completely pre-wired with battery fuse holders and connection terminals. They are attached to standard profile rails or by direct wall mounting.