18650 Battery Charger with Protection Circuit

The single-cell lithium-ion battery charger with auto-cutoff is an intelligent and user-friendly device designed to charge various types of lithium-ion batteries with a voltage of 3.6 to 3.7 volts. This charger operates on AC input from 100 to 240 volts and provides a 4.2V output with a charging current of 300 mA, making it suitable for battery sizes such as 18650, 14500, and 16340. One of its key features is the auto-cutoff system, which stops the charging process once the battery is fully charged, preventing overcharging and damage to the battery. This function extends the battery's useful life and ensures safe operation.

Single Lithium-ion Battery Charger is equipped with a rotating plug that easily connects to power outlets, and its compact, lightweight design makes it highly portable. Additionally, the device supports older batteries and holds CE certification, adhering to safety and quality standards. Overall, with its smart features and user-friendly design, this charger is a suitable option for safely and quickly charging various sizes of lithium-ion batteries.

The single-cell battery charger with charging protection is designed to precisely monitor charging current and voltage, protecting the battery from overcharging and excessive heat. This capability enhances safety and extends battery life. This smart battery charger with auto-cutoff provides intelligent management of the charging process; after the battery is fully charged, the charging current is automatically cut off, preventing damage to the battery.

Furthermore, this Auto Cut-off Battery Charger utilizes fast-charging technology to minimize the required charging time. It uses indicator lights to inform the user of the charging status: a red light remains on during charging and turns to green once the battery is fully charged.

Auto Cut-off Battery Charger Application:

1. Charges various sizes of lithium-ion batteries, including 18650, 14500, and 16340.

3.7V Battery Charger Specification:

1. Input Voltage: AC 100V to 240V
2. Charging Current: 300 mA for rechargeable lithium-ion batteries
3. Charge Termination Method: Detects maximum voltage up to 4.20V with ±1% accuracy and automatically cuts off charging
4. Charge Indicator Light: Red solid light while charging, orange blinking light during fast charge, green solid light when fully charged
5. Automatic Charge Rate Adjustment
6. Supports Lithium-ion Battery Sizes: 18650, 14500, 16340
7. Supports Lithium-ion Batteries with a maximum length of 71 mm and diameter of 26 mm
8. Product Dimensions: 105 x 34 x 43 mm