GEM I GHM Series batteries are Modular batteries. 

Rack mounted or container based system configuration 6V mono-block cells, installed horizontally making 24/48/96V power systems. GEM I GHM Series batteries are adopted with advanced AGM technology, the main applications are Telecommunication power, Cellular Data and Towers, Data Center, Solar Power system and Turnkey systems where high-energy power reserve is required. The GEM I GHM Series batteries are complied with international industrial standards such as IEC 60896 and JISC 8707, as well as the domestic industrial standards, with an extremely long designed life (12 years) in float service, with flexible rack mounted and counting installation. 

Typically the 6V modular cells are using for making 48V battery system.