3A 18650 Lithium Battery Charger Module with Battery box 5V Type-C

3A 18650 Lithium Battery Charger Module with Battery box 5V Type-C is a highly efficient, all-in-one power management solution designed for portable electronics and DIY power banks. This compact module combines a high-current lithium-ion battery charger circuit with an integrated 18650 battery holder slot. Consequently, it completely eliminates the need for separate battery wiring, saving valuable assembly time and reducing connection resistance. The board utilizes a modern Type-C USB interface to accept input power, which enables a massive 3A charging rate for rapid cell replenishment. Furthermore, onboard protective circuitry shields your lithium cell from unsafe operating conditions. Therefore, you can rely on this robust module to deliver stable and fast charging capabilities to any 3.7V lithium-based hardware setup.

Key Features:

• High-Current Fast Charging: Supports up to a 3A maximum charging current, decreasing overall downtime by replenishing high-capacity 18650 cells rapidly.
• Integrated Battery Slot: Incorporates a pre-wired, heavy-duty 18650 battery holder directly onto the PCB, providing a reliable and secure physical connection.
• Modern Type-C Input: Utilizes a standard Type-C USB port for power entry, ensuring broad compatibility with contemporary smartphone chargers and power adapters.
• Comprehensive Protection: Features onboard over-charge, over-discharge, and short-circuit protection guards to keep your valuable lithium-ion cell operating safely.
• LED Status Indicators: Employs clear onboard LED lights to visually convey the charging state and completed status in real time.

Technical Specifications:

• Input Voltage Range: 4.5 V to 5.5 V DC
• Input Interface Port: USB Type-C (Female)
• Maximum Charging Current: 3.0 A
• Full Charge Cut-off Voltage: 4.2 V ±1%
• Low Battery Cut-off Protection: ≈ 2.9 V
• Supported Battery Type: 3.7 V / 4.2 V 18650 Lithium-Ion Battery
• Conversion Efficiency: ≥ 90% (During peak switching step-down phase)

Mechanical Specifications:

• Battery Holder Type: Single-slot 18650 structure
• PCB Material: Standard FR-4 glass epoxy board
• Battery Contacts: High-tension spring-loaded metal contacts for minimised resistance
• Mounting Method: Surface mount or through-hole soldering contacts at the board edge

Dimensions:

• Total Board Length: ≈ 78.0 mm
• Total Board Width: ≈ 22.0 mm
• Overall Height (With Slot): ≈ 18.5 mm
• Weight (Without Battery): ≈ 11.5 g

Pinout and Wiring:

• Type-C Port: Primary power input. Plug a standard 5V USB Type-C cable here to initiate charging.
• IN+ (Input Positive): Alternative solder pad for hardwiring a 5V DC positive supply wire.
• IN- (Input Negative): Alternative solder pad for hardwiring the 5V DC ground/negative return wire.
• BAT+ (Battery Positive): Internal hardwired trace to the positive spring contact of the 18650 slot.
• BAT- (Battery Negative): Internal hardwired trace to the negative spring contact of the 18650 slot.
• Wiring Note: However, always double-check the battery polarity markings printed inside the plastic box before inserting the cell to prevent permanent damage to the safety circuit.

Datasheet Reference:

• Download IP2312 3A Lithium Battery Charger Controller Datasheet

Commonly Used in:

• DIY Power Banks: Constructing single-cell portable backup power supplies for electronics.
• Robotics Projects: Powering mobile tracking robots and robotic arms that depend on robust 18650 cells.
• Arduino / ESP32 Power Rigs: Providing a compact and easy-to-charge power module for outdoor microcontrollers.

Applications:

• Portable Instrumentation: Powering handheld measurement equipment and data loggers smoothly in the field.
• Emergency Backup: Serving as the core battery storage engine for custom solar or emergency LED lanterns.
• Wireless Node Deployments: Fueling standalone Wi-Fi or LoRa IoT nodes that require prompt swapping or charging of cells.

Equivalent Models:

• TP4056 with 18650 Box: A widely used alternative charger setup, however, it limits maximum charging speeds to a slower 1A rate.
• TP5100 2A Charger Module: A step-up variant capable of higher currents, but it lacks an integrated Type-C port on generic boards.
• IP2312 3A Charging Board: The standalone bare board core that shares identical electrical performance metrics.

Package Includes:

• 1 x 3A 18650 Lithium Battery Charger Module with Battery box 5V Type-C