The Battery Operated Stacker Model No-SK-9M developed by TMMC (MHE DIVN) is designed Rugged welded steel construction, welded and gusseted as necessary DC series wound traction motor of suitable speed in each direction. Spring assisted control handle steering lock on 80o each side, control head  with butterfly knob speed control switch with lock and collision switch. Mechanical shoe type, coupled to brake drum to control drive speed. It brakes automatically when handle is released. electro hydraulic with push button One wide face drive wheel polyurethane with double sealed bearing, 4 nos nylon rollers with double sealed bearings and 2 nos stabilizer wheels of polymer. Tubular cell traction battery, initially charged. Automatic charger.