EMERGENCY LIFE SAVER: The GOOLOO portable car battery jump starter power pack with 2500A peak current amps, the car jump starter can easily jump start 12V vehicles up to 8.5L gas or 6.0L diesel. What's more, we have a "Boost" feature that can wake up a completely dead vehicle. It is fully charged in 3-4 hours and can stand by for 24 months. SAFE AND EASY TO USE: The smart jumper cable features 10 kinds of advanced safety technologies,including over-current protection, overload protection, over-voltage protection, over-charge protection and high-temperature protection to ensure safety for the user. Besides, the jump starter battery pack has good quality to work well in extreme temperature (-4°F to 140°F). POWER BANK CHARGER: The GOOLOO portable car battery jump starter box can be used to charge numerous devices using its USB output ports (5V 2.1A, 5V 2.4A/9V 2A) or 15V 10A output using the included cigarette lighter socket. The quick-charge 3.0 USB port charges your devices faster and is compatible with almost all USB charging devices, including cell phones, tablets, Kindles or digital cameras. LIGHTWEIGHT AND SLEEK DESIGN: The GOOLOO portable car jumper starter weighs just 1.19 pounds and measures 6.18x2.95x1.42 inches. You can easily hold it in your hand, or put it in your pocket, or put it anywhere in the car. AFFORDABLE AND POWERFUL- Get an all-in-one car bettery starter, power bank and LED flashlight at an affordable price. The performance of this GOOLOO portable car battery jump starter power pack was just as capable as many of the high-end model and can meet the needs of most people.