β’Voltage (12V): This indicates the power rating of the battery. Make sure the replacement battery is also 12 volts to be compatible with your drill.
β’Capacity (1500mAh): The capacity tells you how much charge the battery can hold. A 1500mAh battery will provide 1.5 ampere-hours of energy. If you need longer usage time, you may want to look for a higher capacity battery (e.g., 2000mAh or 3000mAh), but make sure it's compatible with your drill model.