This high-quality external auxiliary battery has a capacity of 2,200 mAh, providing ample power to keep your devices charged on the go. Crafted from durable aluminum, this battery is not only sleek and stylish but also has a long-lasting construction. It comes with a convenient charging and micro USB cable for easy connectivity. With its large printing surface, this battery is perfect for adding personalized logos or designs, particularly through laser printing. Whether you want to showcase your brand or create a unique gift, this battery offers plenty of space for customization. Presented in an attractive design box, this battery makes a great impression for corporate gifts or promotional giveaways. You can be confident that our external auxiliary batteries are of the highest quality as they incorporate non-recycled, grade A batteries that have a service life of at least 500 charging cycles. They also comply with CE regulations and are manufactured according to RoHS standards. To ensure your safety, this battery is equipped with multiple protection systems. It features an overcharge protection system, a complete discharge protection system to increase its durability, and a blocking system to prevent short circuits. The constant charging transfer system adjusts the charging speed according to the capacity of the target device, ensuring efficient and safe charging. Stay powered up wherever you go with this versatile and customizable external auxiliary battery.