Battery Compartment

While trying to figure out why my battery pack wouldn't charge, I opened up the cases that hold two 12V cells each. I discovered that the cheap plastic dividers that were supposed to separate the top and bottom cells were completely smash so the top battey was sitting right down on the leads from the bottom battery. It didn't look good to me so I made a separator out a piece og 3/8" ply, 3"X3" and taped to the tops of the bottom bateries so the leads were not in contact with the batteries above. I don't know if it made any real difference but it's something that you might want to try.