That accessory of mobile phone charger is very expensive.

Mobile phone charger charger head accessories are expensive. According to relevant public information, among the accessories of mobile phone chargers, the charging head, also known as the power adapter, is more expensive. The charging head is the core accessory of mobile phone charging, and its function is to convert the power supply voltage into a voltage suitable for mobile phone charging. At the same time, the charging head needs to ensure the stability and safety of the output current, so it needs to invest a high cost in the design and production process.