A compact, portable rechargeable battery designed to provide on-the-go power for smartphones, tablets, laptops, and other USB-enabled devices. Typically equipped with multiple USB ports (including USB-C and Lightning), it offers capacities ranging from 1,000mAh to 30,000mAh+ for extended charging. Features like fast charging, smart safety protections (overvoltage, short-circuit), and sleek designs make it essential for travel, emergencies, or remote work.
