The 4000A car battery jump starter battery pack can jump-start 12V vehicles up to 40 times in seconds, suitable for motorcycles, cars, SUVs and more.Compatible with most gas engines and diesel engines up to 12.0L. It also features 3-mode LED lights (flashlight, strobe, SOS) and functions as a portable power bank. This jump starter boasts a compact design, measuring just 7.28" x 3.35" x 1.77" and weighing only 0.9 lbs—comparable to an ordinary power bank. Use it as a power bank to quickly charge your phone, tablet, and other devices, making it a reliable companion for road trips and emergencies.