GM{1}}4.7⁄2 be bateri-}}pawa rel grinda em i wanpela kompak, hai{6}}}ripresen solusen bilong rel bilong taun, ol metro tanel, na ol swit zon we ol tradisenel grinding tren i no inap wok long en. Hevi bilong 28 kg tasol na i gat pawa long 7.2kW litiam betri, em i givim wankain, low-nois ( Less winim o wankain olsem 75 dB) pefomens i no gat ol emisen, na dispela i mekim em i gutpela long lukautim ovanait long nait long ol eria i stap insait o ol ples bilong sindaun. Ol i bin wokim bilong wanpela i ken yusim singel-opereta, GM-4.7⁄2 i mekim na ol i ken putim hariap setup, gutpela weld pinis, na stretpela rot bilong stretim rel profail — bringim pawa bilong ol bikpela tren bilong grisim i kam long laspela mail bilong lukautim trek.