Elevate your portable power stations to the next level with this versatile 4-piece battery holder. Made from durable plastic and designed for safe use, this case holds four AA batteries that can be easily charged via USB port. With a built-in ON/OFF switch, you can turn the device on or off whenever needed.

But that's not all - this case also includes a storage compartment with two plastic batteries to keep them organized and within reach. And don't worry about losing your keys or other small items; there are two screws for easy access.

The design is sleek and compact, making it perfect for storing in a backpack, purse, or car trunk. The materials used are high-quality and resistant to wear and tear, ensuring that this battery holder will withstand heavy use. Whether you're a camper, hiker, or outdoor enthusiast, this case has got you covered.

With its easy-to-use design and durable construction, this 4-piece battery holder is sure to provide hours of reliable power storage for your devices on-the-go.