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The TP5100 2A 18650 Battery Charger – Dual Cell Lithium Ion Charging Module is an advanced power management solution for efficiently charging single (4.2V) or dual (8.4V) lithium-ion 18650 batteries. With a wide input voltage range of 5V–18V and an adjustable charging current up to 2A, this module offers fast, stable, and safe charging for high-capacity battery packs used in portable electronics and DIY projects.
Built around the high-performance TP5100 IC, this charger integrates key safety features including overcurrent protection, thermal shutdown, reverse battery protection, and battery temperature monitoring. With a high-frequency switching design (400kHz), it ensures efficient operation with minimal heat, even at high charging currents.
The TP5100’s compact design and fully integrated features make it ideal for use in robotics, power banks, smart tools, IoT devices, and other high-power lithium battery-based systems. It eliminates the need for external Schottky diodes and features onboard PMOSFETs for reverse current blocking, making it a robust and space-saving charging solution.
🔧 Key Features
- Dual Battery Charging Support – Works with single (4.2V) or dual (8.4V) lithium-ion cells
- Wide Input Voltage – Operates from 5V to 18V DC
- Adjustable Charge Current – From 0.1A to 2A via external resistor
- Three-Stage Charging – Pre-charge, constant current, and constant voltage
- Built-in Protections – Overcurrent, overtemperature, short circuit, reverse battery, and undervoltage protection
- High Frequency Operation – 400kHz switching allows smaller external components
📐 Technical Specifications
| Model | TP5100 |
| Input Voltage | 5V to 18V DC |
| Charging Voltage | 4.2V (single) / 8.4V (dual) |
| Charging Current | Adjustable 0.1A to 2A |
| Precharge Current | 10% to 100% programmable |
| Switching Frequency | 400kHz |
| Protections | Overcurrent, Overtemp, Short Circuit, Reverse Polarity |
| Inductance | 20uH or higher |
| Temperature Monitoring | Yes, via NTC input |
| Package | QFN16 |
📌 Applications
- Lithium Battery Charging – Ideal for 18650 cells and lithium packs
- Portable Electronics – Use in IoT, robotics, wearables, or smart devices
- DIY Power Banks – Compact solution for dual battery packs
- Rechargeable Torch and Tools – Efficient charging for high-drain tools
📦 Package Includes
- 1 × TP5100 2A 18650 Battery Charging Module
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