High-Performance Battery: Equipped with a robust 10000-12000 mAh battery, this car jump starter ensures a conversion rate of over 90%, providing reliable and efficient power in emergency situations. Its four built-in batteries enhance its capability to start your vehicle multiple times on a single charge. Advanced Safety Features: Certified by multiple external testing organizations including MSDS, ROHS, ce, and UL, this device guarantees top-notch safety with no high-concerned chemicals. It's designed to protect against overcharging, over-discharging, and short-circuiting, ensuring your vehicle and devices are safeguarded. Multifunctional Use: Not only does it serve as a powerful jump starter, but it also features a built-in air compressor to inflate tires, making it a versatile tool for roadside emergencies. The inclusion of USB ports, lighting options, a warning light, and SOS lighting further enhances its utility in various situations. Portable and User-Friendly: Designed for on-the-go use and crafted from durable materials, this compact device is easy to store in your car and simple to operate. Whether you're facing a flat tire or a dead battery, the jump starter is your reliable companion for all car emergencies. Description/Features: Tips: Ensure the product power is over 75% for optimal performance. Performance decreases as power diminishes. Avoid continuous inflation for more than 10 minutes to prevent overheating. Allow a 5-8 minute cooling period. Avoid prolonged exposure to sunlight or humid conditions to prevent damage and short circuits. Specifications: Instant Start in case of low battery, rapid air inflation, jump starter battery, and inflator all-in-one. Capacity upgrade, cylinder upgrade, smart clamp upgrade. Preset tire pressure with auto-stop on full charge. Car Mode: 2.50