EE REPORTED: HIS JOB ASSIGNMENT REQUIRED THE USE OF A DBT BATTERY SCOOP. THE SCOOP HAD BEEN LEFT ON CHARGE BY THE PREVIOUS SHIFT. EE WAS STANDING ALONGSIDE THE MACHINE, REACHING OVER AND PULLING THE BATTERY CHARGER PLUG FROM THE BATTERY PLUG RECEPTACLE WHEN MUSCLE SPASMS WERE FELT IN HIS LOW BACK REGION.