The Manual Way To Apply An Equalizing Charge To A Lead- Acid Battery: If you do not want to buy a charger that does an equalizing charge automatically or if you just want to manually apply an equalizing charge yourself, you can follow these steps: Step 1) Get out your battery charger (i.e. one does not have an equalizing mode). Step 2) Get out your lead-acid battery and ensure that the battery is a FLA (flooded lead-acid) battery. *IMPORTANT: Applying an equalizing charge to other kinds of batteries may cause damage and is not recommended. This includes SLA (sealed lead-acid) batteries like AGM (absorbed glass mat) and Gel batteries. Step 3) Remove all electrical connections to the battery. Step 4) Connect the battery to the charger. Step 5) Charge the battery until it has reached a normal full charge. Step 6) At this stage the charge is usually automatically terminated by the charger. View our Free Presentation to learn how to bring old batteries back to life again