Equalization | P12 |
7521 AND 7522 BATTERY CHARGERS |
WARNING 
Equalization is a user selectable and potentially dangerous charging stage that should not be performed without sufficient knowledge. Personal or property damage may occur if equalization is performed incorrectly. It is highly recommended that you seek professional guidance before performing equalization. Equalization causes off gassing of harmful chemicals inside of the battery. Only perform equalization while the batteries are in a
CAUTION 
Equalization may only be performed on flooded (wet) lead acid batteries. Serious personal or property damage may occur if equalization is performed on any battery type other than flooded lead acid batteries.
Definition of Equalization
Equalization is an increased voltage overcharge performed only on flooded lead acid batteries. Once a battery is fully charged equalization increases the voltage and forces additional charge into the battery to combat negative chemical side effects that can occur in flooded batteries. It is done to compensate for stratification, a
condition where the acid concentration is uneven throughout the battery, and typically higher at the bottom. It is also done to remove sulfate crystals that build up on the lead plates in flooded batteries.
Prior to Equalization
Contact the manufacturer of your flooded lead acid batteries to confirm the parameters of equalizing your specific batteries. Every battery manufacturer defines different equalization parameters which are important to understand prior to equalization. All batteries must be fully charged and not under load from any device. The P12 Battery Charger will not allow equalization to occur if batteries are discharged or powering any device.
Equalization Process
1.Confirm batteries are fully charged by verifying the charger is in Float mode with no active loads.
2.Turn off or disconnect all DC devices that are connected to the batteries. Disconnect the battery banks not being Equalized by removing the fuses at the battery connection.
NOTE: Equalization will not occur if steps 1 and 2 are not met.
3.Confirm use of flooded lead acid batteries.
NOTE: Equalization will only occur if the battery type is set to “Flooded Lead Acid” (FLA) or “User”. Do not proceed if you are using any other battery type. See bluesea.com/P12 for details.
4.From any screen simultaneously press and hold the left and right most buttons for 5 seconds.
5.Read and understand the caution screen before proceeding.
6.Press “I Accept” to continue.
7.Using the battery manufacturer’s parameters, input the correct equalization voltage, amperage, and time on the battery bank you would like to equalize. You may only equalize one battery bank at a time.
NOTE: Equalization parameters vary based on battery size. Confirm parameters for every battery connected to the charger before continuing.
16Specifications are subject to change. See bluesea.com/P12 for current information.
