charmast CB01 10,000mAh Power Bank with Built-In USB-C and Micro-USB Cables

A travel charger should be easy to carry and ready for the devices you use. The charmast CB01 combines a 10,000mAh battery with built-in USB-C and Micro-USB cables, so charging on the go takes less cable sorting.

It is also designed for multi-device use. With six output ports, it can charge up to six devices at once, making it useful when a phone, tablet, earbuds, or other personal devices need power together.

Its slim purple body measures 5.68 x 2.63 x 0.7 inches. That compact format suits a purse, backpack, or car for commutes and trips.

The essentials

The built-in USB-C and Micro-USB cables make this power bank a practical alternative to carrying a separate cord for each device. Connect a compatible device directly, or use the available ports to charge several devices together. The manufacturer lists compatibility with smartphones and tablets, and describes use with devices such as iPhone, Samsung Galaxy, Pixel, iPad, AirPods, and Kindle. Match the connection to your device when charging.

The 10,000mAh capacity gives you a portable reserve for days away from an outlet, while the six output ports support charging up to six devices at the same time. That can be especially useful for a shared travel setup or a personal collection of phone, tablet, and accessories. An auto shut-off feature and LED indicator lights are also listed.

The product is rated at 37Wh and described as suitable for air travel in carry-on baggage. Airline rules cited for this product require carrying it in the cabin rather than in checked luggage. Buyers often appreciate its portability, ease of use, and range of connectors. Feedback about charging speed and how long the battery lasts is mixed, so the most useful reasons to choose it are the built-in cables and multi-device setup.

Fit and sizing

At 5.68 inches long, 2.63 inches wide, and 0.7 inches thick, the CB01 has a slim profile that can fit in a purse, backpack, or travel pouch. Its purple finish makes it easy to distinguish among everyday accessories. The listed battery type is lithium polymer, with one battery included.

This format is suited to people who want a single portable charger for several device types rather than a setup centered on one device and its dedicated cable. The built-in USB-C and Micro-USB connections are the key details to consider when deciding whether it fits your everyday devices.

Usage tips

Keep the charger in your carry-on when flying, and use the built-in cable that matches the device you want to charge. For a trip with several devices, its multiple outputs let you connect up to six at once. At home or in the car, it can serve as a compact backup for a phone and accessories without requiring a separate charging cord for every connection.

The manufacturer also describes a low-current charging mode for products such as AirPods. It is activated by pressing and holding the power switch, allowing the charging port to switch from higher to lower amperage. This gives the charger a practical role beyond phones and tablets when you carry smaller electronics.

Final verdict

The charmast CB01 is a useful fit for commuters and travelers who value built-in USB-C and Micro-USB cables, a slim 10,000mAh format, and the ability to charge multiple devices together. Its strongest everyday advantage is having several common charging connections in one portable power bank, ready for a phone, tablet, or accessories on the move.