Hi all,

I work at a flooring store and our fork truck has been having problems keeping a charge. Mind you, it's old, so ideally the batteries would probably need to be replaced, but I was just wondering if any of you smart folks could explain why our fork truck seems to last longer when only charged for 1 hour than giving it a full charge (approx. 3 hrs.).
I know it's not good to take it off it's charge before it's done, but if we give it a full charge it only seems to last approx. 30 minutes.
The water levels are good and we cleaned out the sulfur deposits off of the batteries.
Any input would be greatly appreciated!! Thanks!