NOCO GBX155 Boost X 12V 4250A Jump Starter The NOCO GBX155 Boost X is the most powerful Boost X available today. A well-balanced, multipurpose power pack that provides jump starts to a wide range of vehicles powered by 12V batteries, the GBX155 includes a two-way USB-C port that is both an output to charge devices and input to charge the 99Wh internal battery. The unit charges from 0% to providing one jump start in just five minutes, and to 100% in only 2.7 hours. UltraSafe 2.0 technology means you, the battery, and the power pack are protected by eliminating starter clamp sparking and damage from battery misconnections. 500-Lumen Integrated Lamp & Device Charger With a simple user interface, access all the Boost X has to offer with a couple button presses and easily read diagnostic feedback at a glance. Using illustrative controls, it takes just seconds to cast 50 to 500 lumens of long-lasting constant illumination or deploy the SOS, blink, or strobe modes for emergency signaling using the integrated flashlight. Alternately you power up to 3 devices at a time with the two USB-C outlets and the USB-C port which is extremely handy during power outages.