Battery Technical Information

• Recharge batteries as soon as your power tool begins to slow down. Never drain a battery completely. This can result in permanent damage by reversing the polarity of the cell.
• Charge batteries completely. There are a limited number of charges that a battery will accept, so removing them before they are charged may not cause damage, but it will waste battery life.
• Allow your battery to cool down when it feels warm to the touch. Heat damages the battery's cells, so never let it overheat.
• Store batteries in a cool, dry place.
• Charge batteries at room temperature, avoiding temperature extremes.

• Discharge batteries completely.
• Recharge a battery that has overheated. Allow it to cool down first.
• Allow battery to sit in a charger for more than a week.
• Allow battery to remain in the tool for more than a week between uses.
• Charge batteries in a single-rate charger if it has a higher voltage than the battery.