RoyPow Ultrasafe 4.0L Car Jump Starter 400A Peak Current & 12000 mAh Portable External Battery Charger & Power Bank, 18 Months of Warranty, Green Compact, portable but powerful Jump Starter: With 400 Amp Peak Output Current, it can boost up to 4.0L gas/petrol engines and 12V 3.0L diesel powered vehicles for at least 20 times after a full charge. Lightweight and durable construction, compact size that will easily fit in your pocket, backpack, or glove box for convenience. Smart Fast Charger:As a 12000mAh External Battery Charger equipped with 2.1A dual USB output and AI technology, it intelligently identifies your devices and provide the fastest charging way. The size of our charger makes the recharging of your digital devices easy on the go. Ultra-safe design: Multi-Protection with mistake-proof technology,built-in the latest exclusive circuitry to guarantee anti-misoperation, Short-circuit Protection, Spark-Proof Reverse Polarity Protection, which allows it to be safely connected to any battery. Multi-functional device: Includes an ultra-bright LED flashlight with 3 light modes (Illumination, SOS, Emergency Strobe) for daily use, and even a compass to guide when lost. 5V/2.1A USB input(unlike most jump starters): Thanks to Roypow exclusive charging technology, you can recharge this gadget everywhere by any common USB device, such as car charger, USB adapter, notebook USB port, no special charger or adapter required(all other brand jump starters require special charger or adapter), very convenient.