The charging methods for best affordable pens vary, and each has its own characteristics and suitable scenarios:

1. USB Charging: This is the most common method of charging. Users can connect one end of the USB charging cable to a power source (such as a computer, wall adapter, or power bank) and the other end to the vape pen for charging. This method is convenient and has strong compatibility, allowing you to charge your vape pen anytime, anywhere.

2. Type-C USB Charging: Some newer vape devices have adopted the Type-C interface, which not only provides faster charging speeds but also supports plugging in both ways (upside down and right side up), making it more user-friendly.

3. Magnetic Charging: Some best affordable pens use magnetic charging technology, connecting to the device with a magnetic charging cable. The magnetic connection ensures a safe and stable charging connection, reducing the risk of damage to the device or cable.

4. Power Bank Charging: For users who are often on the go or traveling, it's possible to charge a vape pen using a power bank. A power bank is a portable battery pack that can charge various electronic devices, including best affordable pens.

5. Replaceable Batteries: Certain best affordable pens are designed with replaceable batteries, allowing users to purchase additional batteries and swap them out as needed. This provides greater flexibility, but requires users to purchase spare batteries.

6. SmartLoad Tech: Devices like the Freemax Maxus 200W support SmartLoad technology, which allows users to assemble the battery without distinguishing the positive and negative poles, making battery loading very simple and convenient.

Each charging method has its unique advantages, and users can choose the most suitable charging method based on their usage habits and needs.