NOCO Boost X GBX155 Lithium Jump Starter 12V 4250A

The NOCO Boost X GBX155 is the top model of the Boost X line: a lithium jump starter for 12V batteries with 4250 A peak current and an internal 99 Wh lithium-ion battery. NOCO quotes engines up to 10.0 liters gasoline and up to 8.0 liters diesel, for cars, SUVs, trucks, boats and RVs. Charging runs over 60 W USB-C Power Delivery in 2.7 hours, and NOCO itself quotes 0 percent to start-ready in 5 minutes of charging. The same USB-C port works as a 60 W output for a laptop or phone, next to a USB output of 5V 2.1 A. UltraSafe 2.0 is spark-free, protects against reverse polarity and has a 60-second timeout. The LED flashlight gives 500 lumens and the housing is IP65 with the ports closed. It measures 305 x 175 x 69 mm, weighs 2.64 kg and works from -20 to +50 °C.

What's inside

NOCO Boost X GBX155 with integrated HD precision clamps, USB-A to USB-C cable (24 in), 12V to USB-C cable (24 in), microfiber pouch and safety/warranty info.

Why this product

• 4250 A peak current: gasoline up to 10.0 liters and diesel up to 8.0 liters, for 12V batteries

• Internal 99 Wh lithium-ion battery with 60 W USB-C Power Delivery in and out

• Charges in 2.7 hours at 60 W, NOCO quotes 0 percent to start-ready in 5 minutes of charging

• UltraSafe 2.0: spark-free, protected against reverse polarity, with 60-second timeout

• Integrated HD precision clamps and a 500-lumen LED flashlight

• IP65 with the ports closed, operating range from -20 to +50 °C

How to use

1. Check that the vehicle has a 12V battery and the engine falls within the stated size (Gasoline up to 10.0 liters, diesel up to 8.0 liters. It must be a 12V system.)

2. Connect the red clamp to the positive terminal and the black clamp to the negative terminal of the battery (The integrated HD precision clamps are attached to the booster. UltraSafe 2.0 protects against reverse polarity, but always check the markings.)

3. Start the engine (UltraSafe 2.0 has a 60-second timeout. If the start does not work, switch the unit off and on again for a new attempt.)

4. Remove the black clamp first, then the red one, and recharge the booster (Charge it via USB-C, for example with the U65 or the included 12V-to-USB-C cable. At 60 W that takes 2.7 hours.)

A handy companion to your jump starter: more tools for maintaining your vehicle.