Quick Answer
To safely equalize flooded lead acid batteries, disconnect the battery bank from the load and charge sources, ensure proper ventilation, and follow the manufacturer's specific equalization charge voltage and duration guidelines.
Pre-EQUALIZATION Preparation
Before attempting to equalize your flooded lead acid batteries, make sure to disconnect them from the load and any charge sources to prevent overcharging or undercharging during the process. This includes disconnecting any charge controllers, inverters, or battery monitors. Ensure proper ventilation in the area to prevent the buildup of hydrogen gas, which is a byproduct of the equalization process.
EQUALIZATION Charge Parameters
The equalization charge typically consists of a slow charge at a higher voltage than the normal charging voltage, usually between 15.5 and 17.5 volts per cell, depending on the manufacturer’s recommendations. The equalization charge should be applied for a period of 2-4 hours, with the battery bank being kept under charge until the voltage drops to around 13.5 volts per cell. It is essential to monitor the voltage closely to prevent overcharging and potential damage to the batteries.
SAFETY Guidelines and Precautions
Wear protective gear, including gloves, safety glasses, and a face mask, when working with flooded lead acid batteries. Ensure the area is well-ventilated to prevent the buildup of hydrogen gas. Keep a fire extinguisher nearby and be prepared to respond to any emergencies. Never attempt to equalize batteries at a higher voltage than recommended or for an extended period, as this may cause damage to the batteries or even an explosion.
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