What is sulphation?
Sulphation is the chemical reaction between the sulphuric acid and the lead plates within a battery. When a battery discharges, sulphate crystals form on the plates, which reduces the battery’s capacity. Batteries kept in a poor state of charge will form "hard" sulphation, which causes permanent damage and can void your warranty. To reduce sulphation, keep a battery fully chargered or fully recharge the battery as soon a possible if the battery is discharged.