TP4056 - Battery Charging/Protection Module (Micro USB)
- Complete Constant-Current/Constant-Voltage (CC/CV) charger for single-cell 3.7V Li-ion/Li-Po batteries.
- Integrated Micro USB port for convenient 5V power input from a phone charger or USB port.
- Default charging current of 1A, easily adjustable using an external resistor (Rprog).
- Features integrated protection via DW01A chip: Over-Discharge (2.5V) and Over-Current (3A).
- High 4.2V charge accuracy (±1.5%) with automatic C/10 termination and recharge.
- Dual LED indicators: Red (Charging) and Green/Blue (Charge Complete).
Product Details
TP4056 Battery Charging and Protection Module (Micro USB, 1A)
The TP4056 Battery Charging/Protection Module is the most popular, cost-effective, and complete solution for charging single 3.7V Lithium-Ion or Lithium-Polymer cells, particularly the common 18650 type. It is based on the highly successful TP4056 linear charger IC combined with the DW01A battery protection IC and FS8205A dual $\text{MOSFET}$s (on protection-enabled variants), offering both charging and crucial safety features.\\ (Constant Current/Constant Voltage)** charging protocol, fixing the final float voltage at 4.2V. The default 1A charging current is ideal for most cells and can be customized by swapping the small Rprog resistor on the board. The integrated protection circuit safeguards the battery against over-discharge (cutting power when voltage drops below 2.5V) and over-current (tripping at 3A load), extending battery life and ensuring safe operation for portable electronics, power banks, and DIY projects.
🔧 Key Features
- Charge Chip: TP4056 Linear Charger IC.
- Input Power: Micro USB connector or IN+/IN− pads (4.5V−5.5V).
- Supported Cell: Single 3.7V Li-ion/Li-Po (Fully charged at 4.2V).
- Charge Current (I max ): 1A Default (Adjustable down to 100mA by resistor).
- Termination: Automatic C/10 termination and Automatic Recharge.
- Integrated Protection (on some variants): Over-Discharge (2.5V UVP), Over-Charge (4.2V OVP), and 3A Over-Current Protection (OCP).
💡 Applications
- DIY Single 18650 Power Banks.
- Charging circuit for portable IoT devices and electronics.
- Battery management for small scale robotics and embedded systems.
- Battery backup systems using Li-ion cells.
⚙️ Technical Specifications
| Charge Chip | TP4056 (Linear Charger) |
| Protection Chip | DW01A (On Protection Variants) |
| Input Voltage | 4.5V to 5.5V DC (Nominally 5V) |
| Full Charge Voltage | 4.2V (±1.5% Accuracy) |
| Default Charge Current | 1000 mA (1A) |
| Over-Discharge Protection (UVP) | 2.5V |
| Over-Current Protection (OCP) | 3A (Discharge current limit) |
| Operating Temperature | −10 ∘ C to +85 ∘ C |
📦 Package Includes
- 1 × TP4056 Battery Charging/Protection Module (Micro USB)
Specifications
- TypeBattery Charging Module
- Operating Voltage5V DC
- Temperature Range−10 ∘ C to +85 ∘ C
- Output TypeConstant Current / Constant Voltage
- Sampling RateNot Applicable
- InterfaceHardwired Terminals
