TP4056 18650 3.7V 4.2V Battery Charging Module with Integrated DC Boost Converter module

The 3.7–9V 18650 Lithium Battery Charger Module is a compact power management board designed to charge single-cell 18650 lithium-ion batteries and simultaneously provide a regulated output voltage. It integrates a charging circuit and a DC-DC boost converter, allowing the battery voltage to be stepped up to higher output levels. This makes the module suitable for portable and battery-powered electronic projects that require stable power delivery.

Technical Specifications:

• Input voltage: 5V (via USB / DC input)
• Battery type: Single-cell 18650 Li-ion (3.7V nominal)
• Battery charging voltage: 4.2V
• Charging current: typically up to 1A (depending on thermal conditions)
• Output voltage: adjustable / boosted up to 9V (module dependent)
• Output current: up to ~1A (varies with output voltage and load)
• Conversion type: Boost (step-up) DC-DC
• Charging control: integrated lithium battery charging IC
• Protection: overcharge, over-discharge, overcurrent, short-circuit (module dependent)
• PCB size: compact, lightweight design

Features:

• Supports charging of 18650 lithium-ion batteries
• Integrated boost converter for higher output voltage
• USB input for convenient power source
• Compact and efficient design
• Built-in battery protection support
• Stable and reliable output for portable electronics
• Easy to integrate into DIY projects

Applications:

• Battery-powered DIY electronics
• Portable power supply units
• Arduino, ESP32, and IoT projects
• Robotics and embedded systems
• Backup power modules
• Handheld and wearable electronic devices