The lead acid battery generates electrical energy through a chemical reaction between its electrolyte fluid (consisting of sulfuric acid and water) and lead plates. Each time a battery discharges, lead sulfate crystals form on the battery plates. When the lead acid battery is recharged, the lead sulfate disperses.
Reconditioning also saves you money by not having to purchase replacement batteries more frequently. Reconditioning charger analyzers, like the Waveband WI-80, will tell you the true state of your battery so you know