Swiffer WetJet Floor Cleaner Mop

Swiffer WetJet floor cleaner mop, with an empty cleaning solution bottle and no more mop heads. It seemed to work fine sometimes, and not other times. Maybe it was just because the solution was low. I didn't take the time to investigate, because I don't want to buy replacement cleaning solution, and the bottles aren't made to be refilled. The 4x AA batteries are fine, all around 1.3V.