Power Up Safely & Smartly

Give your lithium-ion projects the reliability they deserve with the TP4056 18650 Lithium Battery Charging Protection Board. Engineered to charge 18650 cells safely and efficiently, this compact module combines a precise charging controller with built-in protection features—keeping your battery and your project safe at all times.

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Why You’ll Love It

• Smart Charging Control: The TP4056 chip handles constant-current/constant-voltage (CC/CV) charging for accurate and stable battery charging.

• Built-In Protection Board: Includes over-charge, over-discharge, and short-circuit protection—perfect for battery-backed electronics.

• Ideal Charging Current: Typically charges at 1A, ensuring quick and safe charging of most 18650 cells.

• Micro-USB or Type-C Input (depending on version): Convenient and widely compatible, making it easy to power from adapters, power banks, or USB ports.

• Battery Safety First: Automatically stops charging when the cell reaches full voltage and cuts off supply if voltage drops too low.

• Compact & Easy to Use: Simple wiring and small form factor make it great for compact builds, DIY gadgets, and portable devices.

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Perfect For…

• DIY power banks

• Solar-powered battery systems

• Portable electronics and IoT devices

• Robotics and embedded projects

• Battery-powered sensors and prototypes

• Recharging loose 18650 lithium-ion cells with safety in mind

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Key Specs at a Glance

• Charging Chip: TP4056 (CC/CV lithium battery charger)

• Input Voltage: 5V

• Charging Current: ~1A (adjustable on some versions)

• Battery Type: Single-cell 3.7V Li-ion (18650 or similar)

• Protection Features: Over-charge, over-discharge, over-current, short-circuit

• Full Charge Voltage: ~4.2V

• Status LEDs: Charging (red) / Full (blue)

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Best Use Tips

• Use a reliable 5V power source for stable charging performance.

• Always connect the battery to the designated BAT+ and BAT– terminals—never reverse polarity.

• Allow proper ventilation when charging in an enclosure; lithium cells generate heat.

• Avoid charging damaged or swollen lithium-ion cells.

• If using with a load, consider modules with OUT+ / OUT– terminals to keep protection active.

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Final Thought

For anyone working with 18650 batteries, this charging and protection board is a must-have. It combines safety, simplicity, and smart charging in a tiny, reliable package—making your power system both safer and more efficient.