The 12.6V 2A Lithium-Ion Battery Auto Cutoff Charger with LED Indicator is a high-quality smart charger designed for safely charging 3-Series (3S) 11.1V Lithium-Ion and Lithium-Polymer (Li-Ion/Li-Po) battery packs. It provides a regulated 12.6V DC output with a maximum charging current of 2A, ensuring efficient and reliable charging performance.
Featuring an automatic cutoff function, the charger stops charging when the battery reaches its full charge voltage of 12.6V, helping protect the battery from overcharging and extending its lifespan. The built-in LED indicator clearly displays the charging status, making it easy to monitor the charging process.
This charger is ideal for battery packs used in robotics, RC vehicles, portable electronics, DIY projects, emergency lighting systems, and other rechargeable lithium-ion applications.
Key Features
- Designed for 3S (11.1V) Lithium-Ion/Li-Po Battery Packs
- Output Voltage: 12.6V DC
- Maximum Charging Current: 2A
- Automatic Full-Charge Cutoff Protection
- Built-In LED Charging Status Indicator
- Stable Constant Voltage and Constant Current Charging
- Overcharge Protection
- Compact and Lightweight Design
- Easy Plug-and-Play Operation
- Reliable and Long Service Life
Technical Specifications
- Product Type: Lithium-Ion Battery Charger
- Battery Compatibility: 3S (11.1V) Lithium-Ion / Li-Po Battery Packs
- Input Voltage: 100–240V AC, 50/60Hz
- Output Voltage: 12.6V DC
- Output Current: 2A
- Charging Method: Constant Current / Constant Voltage (CC/CV)
- Auto Cutoff: Yes
- LED Indicator:
- Red: Charging
- Green: Fully Charged / Standby
- Output Connector: DC Barrel Plug (Size may vary by model, commonly 5.5mm × 2.1mm)
- Protection Features: Overcharge Protection (Additional protections may vary by manufacturer)
- Housing Material: Durable ABS Plastic
Working Principle
The charger uses the CC/CV (Constant Current / Constant Voltage) charging method, which is recommended for lithium-ion batteries.
- During the initial charging stage, the charger supplies a constant current of up to 2A to rapidly charge the battery.
- As the battery voltage approaches 12.6V, the charger automatically switches to constant voltage mode.
- The charging current gradually decreases as the battery reaches full capacity.
- Once fully charged, the charger automatically cuts off or enters maintenance/standby mode, preventing overcharging.
- The LED indicator changes color to indicate that charging is complete.
Applications
- 3S Lithium-Ion Battery Packs
- 3S Lithium-Polymer (Li-Po) Battery Packs
- Arduino and ESP32 Battery Projects
- Robotics and Automation
- RC Cars, Boats, and Drones
- Portable Electronic Devices
- Emergency Lighting Systems
- DIY Battery Packs
- Solar Energy Storage Projects
- Battery Backup Systems
Advantages
- Automatic cutoff for safe charging
- Extends battery life by preventing overcharging
- Fast and efficient 2A charging
- Easy-to-read LED charging indicator
- Stable CC/CV charging algorithm
- Compact and lightweight design
- Easy to use with compatible battery packs
- Reliable performance for everyday use
Usage Tips
- Use only with 3S (11.1V nominal, 12.6V full-charge) lithium-ion or lithium-polymer battery packs.
- Verify that the battery pack includes a Battery Management System (BMS) for additional safety.
- Ensure the charger connector matches your battery pack before use.
- Charge the battery in a dry, well-ventilated area away from flammable materials.
- Disconnect the charger after charging is complete if it does not automatically switch to standby.
- Do not use the charger with lead-acid, NiMH, NiCd, or other incompatible battery chemistries.
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