A booster pac is a portable jump starter. Should the battery in your car, boat, RV or generator die, a booster pac can power the battery and restart it. A booster pac uses a rechargeable battery and jumper cables to provide power to the battery. The rechargeable battery should be charged after each use to ensure it is fully powered in case it's needed again.
Plug the power adapter into the adapter outlet, typically located on the back side of a booster pac.
Insert the other end of the power adapter into a working electrical outlet. Alternatively, some booster pacs can be charged with power from a car's cigarette lighter. If your vehicle has a cigarette lighter adapter, insert that into the hole that houses the vehicle's cigarette lighter.
Charge the battery until it has a full charge. This process can take up to 12 hours, depending on the type of battery. Most brands of booster pacs have a battery indicator light that registers whether the battery is charging or if it is fully charged.
Remove the power adapter from the booster pac when the battery is charged.
