Description
Product Overview
The TP4056 1A Lithium Battery Charger Module (Micro USB, With Protection) is a complete, low-cost charging solution designed for single-cell lithium-ion and lithium-polymer (LiPo) batteries. This compact module combines a TP4056 charger IC with a DW01 battery protection IC, offering both charging and protection functions in one tiny board .
Based on the industry-standard TP4056 chip from Top Power ASIC, this module implements a Constant Current / Constant Voltage (CC/CV) charging algorithm—the correct method for safely charging lithium batteries. The TP4056 features an internal PMOSFET architecture and includes thermal feedback regulation that adjusts charge current to limit die temperature during high power operation .
When power is applied, the module automatically delivers the maximum preset current (1A by default) until the battery reaches 4.2V, then switches to constant voltage mode, gradually reducing the current until the battery is fully charged .
The integrated DW01 protection circuit provides essential safeguards: overcharge protection, over-discharge protection (cutoff at approximately 2.5V), and overcurrent protection (3A typical) . The Micro USB input allows direct connection to standard Android phone chargers, power banks, or computer USB ports.
Whether you are building portable electronics, powering an Arduino or ESP32 project with battery backup, maintaining 18650 cells, or creating custom power banks, this TP4056 module offers a reliable, ready-to-use charging solution at a fraction of the cost of dedicated chargers .
Key Features
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Integrated Protection Circuit: Includes DW01 battery protection IC and FS8205 dual MOSFETs, providing overcharge, over-discharge (2.5V cutoff), overcurrent (3A), and short-circuit protection .
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Micro USB Input: Standard Micro USB connector for easy connection to Android phone chargers, power banks, or computer USB ports .
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1A Maximum Charge Current: Default charge current of 1000mA (1A), adjustable by changing the programming resistor (RPROG) for lower current applications .
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CC/CV Charging Algorithm: Proper Constant Current / Constant Voltage charging method essential for lithium battery safety and longevity .
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Dual-Color Status Indicator: Red LED indicates charging in progress; Green/Blue LED indicates fully charged or no battery connected .
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Protected Output Terminals: OUT+ and OUT- pads pass through the DW01 protection circuit, disconnecting the load if battery voltage drops below 2.5V .
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Alternative Power Input Pads: IN+ and IN- solder pads allow custom 5V wiring for DIY projects when Micro USB is not available .
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Automatic Recharge: When a fully charged battery drops below 4.05V (approximately 80-90% capacity), a new charging cycle automatically begins .
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Thermal Regulation: Automatically reduces charge current if internal die temperature exceeds safe limits, protecting the chip .
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Input Voltage | 4.5V – 5.5V DC (5V typical) |
| Full Charge Voltage | 4.2V ±1.5% |
| Maximum Charge Current | 1A (1000mA) default, adjustable |
| Over-Discharge Protection | 2.5V ±1% |
| Over-Current Protection | 3A (typical) |
| Operating Temperature | -10°C to +85°C |
| Dimensions | Approx. 27mm × 17mm × 4mm |
| Weight | Approx. 6g |
| Connector Type | Micro USB (input), 2.54mm pitch pads (B+/B- and OUT+/OUT-) |
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