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. Explosion. Unmonitored, incompatible, or damaged batteries can explode if used with product. Do not leave product unattended while in use. Do not attempt to jump start a damaged or frozen battery. Use product only with batteries of recommended voltage. Operate product in well ventilated areas. Unit is too cold to jump start, but other functions are still available. / Allow the unit to warm up. The GB50 is designed to jump start 12-volt lead-acid batteries down to 2-volts. If your battery is below 2-volts, the Boost LED will be "Off". This is an indication that the GB50 can not detect a battery. If you need to jump start a battery below 2-volts there is a Manual Override feature, which allows you to force "On" the jump start function.

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). 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.

Disables safety protection and manually forces Boost "On". Only for use when a battery is too low to be detected. In addition to its jump-starting capabilities, the NOCO Genius Boost XL GB50 also functions as a portable power bank. It features USB ports that allow users to charge their electronic devices such as smartphones, tablets, and cameras, making it a versatile and convenient tool to have on hand. The NOCO Genius Boost XL GB50 is a battery charger specifically designed for charging dead or low batteries in a variety of vehicles and equipment. It is a portable and compact charger that provides a high level of power for its size. When recharging, the charge level of the internal battery is indicated by the Charge LEDs. The LEDs will slowly pulse 'On' and 'Off' and become solid until all four Charge LEDs are on. When the battery is fully charged, the Green 100% LED will be solid, and the 25%, 50% and 75% Charge LEDs will turn "Off". From time to time, the Green 100% LED will pulse indicating maintenance charging is occuring. 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.

Light Mode Button Toggles the ultra-bright LED light through 7 light modes: 100% > 50% > 10% > SOS > Blink > Strobe > Off Unit is too hot to jump start or use other functions. / Allow the unit to cool, and bring the unit into cooler environment. Make sure all of the vehicle's power loads (headlights, radio, air conditioning, etc.) are turned off before attempting to jump start the vehicle.

G3500

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. Boost LED Illuminates White when Boost is active. If the unit is connected properly to a battery, the GB50 will automatically detect a battery and go into Boost mode (LED flashes White when Manual Overide feature is active). 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.