1. 7.4V charging processes with intelligent chip protection, automatic shut-off when charging is complete, short-circuit protection, overcharge protection, constant-current charging, and faster charging speed. 2. USB 5V power input suitable for connecting to mobile phone charging adapters, computers, portable power banks, and other USB power sources. 3. LED indicator light clearly shows charging status, allowing you to monitor progress at a glance. 4. Intelligent charging detection chip limits excessive current and voltages from the input, protecting connected devices from damage. Key benefits and use cases - Safe and reliable charging: multiple protection features (automatic shut-off on full charge, short-circuit, and overcharge protection) reduce the risk of damage to your devices. - Flexible power options: works with standard USB 5V sources such as wall chargers, computers, and portable power banks, enabling convenient charging in different environments. - Clear charging status: the LED indicator provides an easy, at-a-glance signal of charging activity and status. - Practical protection for devices: intelligent input monitoring prevents excessive current and voltage, enhancing the longevity of your devices. - Efficient performance: constant-current charging supports faster, stable charging for compatible devices. 2-3 use scenarios - Home or office USB charging: plug into a USB 5V wall adapter to safely charge a smartphone or other USB-powered devices while you work or relax. - Travel with a power bank: connect to a portable power bank to charge on the go, with protection features ensuring safe operation even when power sources vary. - Everyday gadget charging: use with computers or other USB power sources to recharge small electronics such as wearables, earbuds, or compact accessories, with the LED indicator helping you track progress.