The GOOLOO GP4000 is a powerful 4000A portable jump starter designed to instantly revive dead batteries in all gasoline and diesel engines up to 10.0L, featuring a BOOST button for severely depleted batteries and compatibility with a wide range of 12V vehicles. Beyond emergencies, it serves as a high-capacity power bank with dual USB outputs and a USB-C port for charging devices. Built with 10 advanced safety protections, heavy-duty metal clamps, a rugged drop-resistant shell, and a built-in flashlight, it operates reliably in extreme temperatures from -4°F to 140°F and can jump-start vehicles over 60 times per charge. The package includes all essential accessories and is backed by an 18-month warranty, with a recommendation to recharge every 2-3 months during extended storage for optimal performance. | Gooloo | | GP4000 4000A Jump Starter for All Gas/10.0L Diesel, 12V SuperSafe Auto Booster Pack & Power Bank with USB/Type-C | Best Buy