Stanley FatMax Jump Starter

How do I use the Stanley FatMax Jump Starter to jump-start my vehicle?

First, ensure the vehicle ignition and all accessories are turned off. Connect the positive (red) clamp to the positive battery terminal, then connect the negative (black) clamp to a metal part of the vehicle chassis or engine block away from the battery. Turn on the Jump-Starter Power Switch, start the vehicle by turning the ignition key, and once it starts, turn off the Jump-Starter Power Switch and disconnect the clamps in reverse order.

How do I charge the Stanley Jump Starter?

You can charge the unit using either a 120V AC outlet or a vehicle's 12V DC outlet. For AC charging, connect the USB Charging Cable to the 120V AC/USB Charging Adapter, plug it into a wall outlet, and insert the cable into one of the dual USB ports under the protective cover. For 12V DC charging, use the 12V DC/USB Charging Adapter plugged into the vehicle's accessory outlet. In either case, the backlit LCD screen will display charging status, and the unit will automatically shut down when fully charged.

What does the Reverse Polarity Indicator mean?

The Reverse Polarity Indicator lights up and sounds an audible alarm when the clamps are connected incorrectly to the battery. If this happens, immediately disconnect the clamps and reconnect them with the correct polarity—red clamp to positive terminal and black clamp to the vehicle chassis or engine block.

Why won't the jump starter start my vehicle?

There are several possible causes: ensure the Jump-Starter Power Switch is turned on, verify the unit is fully charged by checking the Battery Status LED Indicators, and confirm the clamps are connected with correct polarity. If the Reverse Polarity Indicator is lit, disconnect and reconnect the clamps correctly. Additionally, factors such as battery size, temperature, and battery condition can affect the jump-starter's ability to start your vehicle.

How do I check the battery level of the Stanley Jump Starter?

Press the Battery Power Level Button to check the current charge status of the unit. The Battery Status LED Indicators will display the current charge level of the internal battery.

How often should I charge the jump starter when not in use?

It is recommended to charge the unit after each use and at least every 3 to 6 months when not in use to maintain battery health. This helps ensure the device is ready when you need it and extends the life of the internal sealed lead acid battery.