BASIC RULES FOR CHARGING A WET CELL LEAD ACID BATTERY WITH A CHARGER.
1. Charge only in a well-ventilated area. Hydrogen gas emitted
during charging is explosive and unhealthy to breath.
2.Choose the right charge program for flooded, gel and AGM batteries. Check manufacturer’s specifications on recommended voltage limits and required time periods at various amps.
3.Charge lead acid batteries after each use if charging is not provide by equipment during use to prevent sulfation. Do not store on low charge.
4.The plates must always be fully submerged in electrolyte. Fill battery with distilled or de-ionized water to cover the plates if low. Do not add electrolyte. Observe water level during charge process to insure no boiling over or exposure to air. Any plate that has been exposed to air is potentially ruined via oxidation.
5.Fill water level to designated level after charging. Overfilling when the battery is empty can cause acid overflow.
6.Formation of bubbles in a lead acid battery indicates that the battery is reaching full state-of-charge (hydrogen on negative plate and oxygen on positive plate).
7.Reduce charge rate if the ambient temperature is higher than 29°C (85°F).
8.Do not allow a battery to freeze. An empty battery freezes sooner than one that is fully charged. Never charge a frozen battery.
Do not charge at temperatures above 49°C (120°F).