High Power Multi-function Jump Starter

Functionality: It serves as a car jump starter for vehicles with dead batteries, and can also function as a power bank to charge electronic devices like phones and laptops. 

Features: Many models include features like LED emergency lights, safety protections (e.g., overcharge, reverse polarity), and sometimes even a built-in tire inflator. 

Capacity: These jump starters typically have a high capacity, often measured in mAh, allowing for multiple jump starts or device charges on a single charge. 

Applications: They are ideal for emergency situations, outdoor activities like camping, and general use for both automotive and personal electronics.