For a battery installed in a vehicle, connect the black clip to a heavy metal part of the engine block or frame away from the battery. If the battery is outside the vehicle, connect it directly to the negative (-) terminal. Power On: Plug the charger into a grounded AC outlet. 3. Setting the Charge

Connect the red clip to the positive (+) terminal of the battery.

Do not plug the charger into a wall outlet until after the clips are connected to the battery.

Operating a NAPA battery charger involves a standard safety sequence to protect your vehicle's electronics and prevent sparks. Whether using a portable maintainer or a heavy-duty bench charger, the following steps provide a universal guide for safe use. 1. Safety and Preparation

Ensure the car's ignition and all accessories (lights, radio) are completely off. 2. Connecting the Charger

Use a wire brush to remove corrosion or gunk from the battery posts to ensure a strong electrical connection.

Use safety glasses and gloves to protect against battery acid and potential sparks.