Make sure all of the vehicle's power loads (headlights, radio, air conditioning, etc.) are turned off before attempting to jump start the vehicle. Press the Power Button to begin jump starting. All LEDs will flash, indicating that all LEDs are properly functioning. If you are properly connected to the battery, the White Boost LED will illuminate. If the battery clamps are connected in reverse, the Red Error LED will illuminate. Reverse the connections to clear this error and then the White Boost LED will illuminate. The White Boost LED is illuminated, when the GB50 is ready to jump start your vehicle. The battery charger also comes with a built-in LED flashlight, which provides visibility in low-light situations. The flashlight has different modes, including a strobe and SOS signal, for emergency situations.

Unit is too cold to jump start, but other functions are still available. / Allow the unit to warm up. Fire. Product is an electrical device that emits heat and is capable of causing burns. Do not cover product. Do not smoke or use any source of electrical spark or fire when operating product. Keep product away from combustible materials. So, when NOCO got in touch to see if we’d like to give their NOCO Boost XL GB50 portable jump starter a test we were all for it. This thing promises a bunch — it can keep your gadgets charged and it can jump start your wheels. Portable battery chargers are no innovation these days, but with the added features on offer here we were excited to give it a whirl. The GB50 is equipped with advanced safety features to protect against reverse polarity, sparks, overcharging, overcurrent, and short-circuits. It has spark-proof technology and reverse polarity protection, making it safe and easy to use even for beginners. But how does it hold up when you’re out adventuring? One thing Alex found really useful was the built in 200 lumen LED flashlight (it has some decent modes, including flashing and emergency SOS) and the ability to charge phones or cameras via the USB ports — this thing is definitely more than just a jump starter.

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And what about that jump starter? Well, while Alex hasn’t had to jump his cars yet, it did the jib beautifully on his boat on an engine that hadn’t started all winter. We’ll call that a success! So, with the torch built in, and holding a charge for up to a year it’s a handy bit of kit. USE THIS MODE WITH EXTREME CARE. THIS MODE IS FOR 12-VOLT LEAD-ACID BATTERIES ONLY. BOTH THE SPARK PROOF AND REVERSE POLARITY PROTECTION FEATURES ARE DISABLED. PAY VERY CLOSE ATTENTION TO THE POLARITY OF THE BATTERY BEFORE USING THIS MODE. DO NOT ALLOW THE POSITIVE AND NEGATIVE BATTERY CLAMPS TO TOUCH OR CONNECT TO EACH OTHER AS THE PRODUCT WILL GENERATE SPARKS. THIS MODE USES VERY HIGH CURRENT (UP TO 1500 AMPS) THAT CAN CAUSE SPARKS AND HIGH HEAT IF NOT USED PROPERLY. IF YOU ARE UNSURE ABOUT USING THIS MODE, DO NOT ATTEMPT AND SEEK PROFESSIONAL HELP.

Try starting the vehicle. Most vehicles will immediately start. Some vehicles may require the GB50 to be connected for up to 30 seconds before starting. If the vehicle does not start right away, wait 20-30 seconds and try again. Do not attempt more than five (5) consecutive jump starts within a fifteen (15) minute period. Allow the GB50 to rest for fifteen (15) minutes before attempting to jump start the vehicle again. When disconnecting, disconnect in the reverse sequence, removing the negative first (or positive first for positive ground systems). Unit is too hot to jump start or use other functions. / Allow the unit to cool, and bring the unit into cooler environment. Hot LED Illuminates solid Red; unit is fully operational, but approaching upper temperature limit. Flashing Red; unit is too hot to jump start, but other functions are still available. As is the law, please note that that as we got the product for free, this post should be deemed an #ad.Carefully read and understand the vehicle owner's manual on specific precautions and recommended methods for jump starting the vehicle. Make sure to determine the voltage and chemistry of the battery by referring to your battery owner's manual prior to using this product. The GB50 is for jump starting 12-volt lead-acid batteries only. Before connecting to the battery, verify that you have a 12-volt lead-acid battery. The GB50 is not suitable for any other type of battery. Identify the correct polarity of the battery terminals on the battery. The positive battery terminal is typically marked by these letters or symbol (POS,P,+). The negative battery terminal is typically marked by these letters or symbol (NEG,N,-). Do not make any connections to the carburetor, fuel lines, or thin, sheet metal parts. The below instructions are for a negative ground system (most common).