Re: SCISSORLIFT!
the main issue that i see is not damage to the motor. the motor probably does not care much.
OTOH, the battery is designed to be fully charged and then run off a charge. What you are doing is running the battery down, charging it a little, then running ti down again. My guess is the battery's life will be impacted negatively by doing this, as basically you only get so many full discharges on a battery before it gives up the ghost.
I side with the foreman on this one, even though I suspect he has the wrong reasoning.