4S 16.8V 2A 18650 Lithium Battery Charger Module (USB Type-C)
₹123.90 incl. GST (₹105.00 + GST)
4S 16.8V 2A 18650 Lithium Battery Charger Module Type-C is a compact charging and balancing module designed for 4-cell (4S) lithium-ion battery packs. Featuring a USB Type-C input, 16.8V charging output, 2A charging current, cell balancing, overcharge protection, and LED status indicators, it is ideal for robotics, portable electronics, DIY battery packs, IoT, and custom rechargeable power systems.
4S 16.8V 2A 18650 Lithium Battery Charger Module Type-C – 4S Li-Ion Battery Charging & Balancing Board
Product Description
The 4S 16.8V 2A 18650 Lithium Battery Charger Module is a compact and practical charging solution designed for 4-cell lithium-ion battery packs connected in series (4S). It provides a regulated charging voltage of 16.8V DC and a charging current of up to 2A, making it suitable for DIY battery packs, portable electronics, robotics, and other rechargeable lithium-ion applications.
The module features a convenient USB Type-C input, allowing it to be connected to compatible Type-C power sources and cables. Its compact design makes it easy to integrate into custom battery-powered projects where an onboard charging solution is required.
The charging module is designed to support automatic charging and cell balancing for a 4S lithium-ion battery pack. Balancing helps maintain more consistent voltage levels between the series-connected cells during the charging process.
Built-in charging protection features help reduce the risk of battery overcharging when the module is used correctly with compatible cells and a suitable power source. The module also includes LED indicators that provide a simple visual indication of the charging status.
Features
- 4S lithium-ion battery charger module
- Designed for 4 × 18650 cells connected in series
- 16.8V DC charging output
- Up to 2A charging current
- USB Type-C input interface
- Automatic charging function
- Cell balancing support
- Overcharge protection
- Compact and lightweight design
- LED charging status indication
- Red LED for charging indication
- Green LED for full-charge indication
- Suitable for DIY battery pack projects
- Ideal for portable electronics and robotics
- Easy to integrate into custom power systems
Specifications
| Parameter | Specification |
|---|---|
| Product Type | 4S Lithium-Ion Battery Charger Module |
| Battery Type | Lithium-Ion |
| Battery Configuration | 4S |
| Compatible Cells | 4 × 18650 Li-Ion Cells in Series |
| Input Interface | USB Type-C |
| Charging Voltage | 16.8V DC |
| Charging Current | 2A |
| Charging Method | Automatic Charging |
| Balancing | Supported |
| Protection | Overcharge Protection |
| Charging Indicator | Red LED |
| Full Charge Indicator | Green LED |
| Application | 4S Li-Ion Battery Packs |
Working Principle
The charger module receives power through its USB Type-C input and provides a controlled charging voltage for a 4S lithium-ion battery pack.
A 4S battery pack consists of four lithium-ion cells connected in series. The combined fully charged voltage of the pack is approximately 16.8V, with each cell reaching approximately 4.2V when fully charged.
During charging, the module controls the charging process and supports balancing between the series-connected cells. Cell balancing helps reduce differences in cell voltage and supports more consistent charging of the battery pack.
The module’s protection circuitry is intended to help prevent overcharging when used with compatible batteries and within the module’s specified operating conditions.
LED Status Indication
The onboard LEDs provide a simple way to monitor the charging process:
- Red LED: Charging in progress
- Green LED: Charging completed / full-charge indication
The exact LED behaviour may vary slightly depending on the module version and operating condition.
Battery Configuration
This module is designed specifically for a 4S lithium-ion battery configuration, meaning four cells are connected in series.
A typical 4S pack is arranged as:
Cell 1 + Cell 2 + Cell 3 + Cell 4 = 4S Battery Pack
The nominal battery voltage of a 4S lithium-ion pack is approximately 14.8V, while the fully charged voltage is approximately 16.8V.
The cells used in the battery pack should be suitable for series connection and should be properly matched for safe and reliable operation.
Typical Application Scenarios
DIY Battery Packs
Suitable for building rechargeable 4S lithium-ion battery packs for portable equipment, custom electronics, and DIY power systems.
Robotics
Can be integrated into robotic systems that use 4S lithium-ion battery packs for motors, controllers, sensors, and other electronics.
Portable Electronics
Useful for custom portable electronic devices requiring rechargeable 4S lithium-ion power systems.
Embedded Systems
Can be integrated into suitable embedded and IoT systems requiring an onboard charging solution for a 4S battery pack.
Custom Power Systems
Suitable for DIY power banks, battery-powered tools, mobile equipment, and other compatible rechargeable electronics.
Applications
- 4S 18650 battery pack charging
- DIY lithium-ion battery packs
- Robotics projects
- Drone and RC projects
- Portable electronics
- Embedded systems
- IoT devices
- Battery-powered equipment
- Custom rechargeable power systems
- DIY electronics projects
- Mobile monitoring systems
- Portable instruments
- Custom automation projects
Package Includes
- 1 × 4S 16.8V 2A 18650 Lithium Battery Charger Module Type-C
Product Disclaimer
Product images are shown for illustrative and representational purposes only. The actual module may vary slightly in PCB colour, component placement, connector design, LED position, dimensions, or labeling depending on the manufacturing batch.
The battery cells, battery holder, USB Type-C cable, power adapter, enclosure, and other accessories shown in product images are not included unless specifically mentioned in the package contents.
This module is designed for compatible 4S lithium-ion battery packs. Incorrect battery configuration, improper wiring, damaged cells, unsuitable power sources, or misuse can result in overheating, battery damage, fire, or other hazards.
Important Safety Notes
- Use only compatible 4S lithium-ion battery packs.
- Use four cells that are properly matched in capacity, type, condition, and state of charge.
- For best results, use cells of the same brand, model, capacity, and age.
- Check cell polarity carefully before connecting the battery pack.
- Do not use damaged, swollen, leaking, or physically compromised lithium-ion cells.
- Do not short-circuit the battery or charging module.
- Use a suitable USB power source capable of providing the required charging input.
- Do not leave lithium-ion batteries charging unattended.
- Use appropriate insulation and enclosure protection when installing the module permanently.
- Follow the battery manufacturer’s charging and safety instructions.
Power Source Requirement
The module uses a USB Type-C input, but the actual input-power requirement depends on the module design and charging conditions. A suitable USB power source should be capable of supplying sufficient power for the intended charging current.
To achieve the intended charging performance, ensure that the connected power source, cable, wiring, and connectors are appropriately rated.
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Frequently Asked Questions
1. What is this module used for?
It is used to charge compatible 4S lithium-ion battery packs, including packs made from four 18650 cells connected in series.
2. How many 18650 cells are required?
A typical 4S configuration uses four 18650 lithium-ion cells connected in series.
3. What is the charging voltage?
The module provides a charging voltage of 16.8V DC for a fully charged 4S lithium-ion battery pack.
4. What is the charging current?
The module is specified for a charging current of up to 2A.
5. Does it support battery balancing?
Yes. The module is designed to support balancing of the series-connected cells during charging.
6. Does it have overcharge protection?
Yes. The module includes overcharge protection intended to help protect the connected battery pack when used correctly.
7. What type of input connector does it use?
The module uses a USB Type-C input.
8. What do the LEDs indicate?
The Red LED typically indicates that charging is in progress, while the Green LED typically indicates that charging is complete.
9. Can I use four different 18650 cells?
For reliable and safer operation, it is strongly recommended to use four cells with the same capacity, model, brand, age, and similar condition.
10. Can this module charge a single 18650 cell?
No. This module is designed for a 4S battery configuration and should not be used as a single-cell charger.
11. Can it be used for robotics projects?
Yes. It can be used to charge compatible 4S lithium-ion battery packs used in robots, RC systems, and other portable electronics.
12. Can I use a normal USB Type-C charger?
The connected power source must be suitable for the module's required input conditions and charging power. Check the module's specifications and use an appropriately rated power supply.
13. Is the 18650 battery included?
No. The package includes only the charger module unless otherwise specified.
14. Is the USB cable included?
No. The USB Type-C cable and power adapter are not included unless specifically mentioned.
15. Can I leave the battery charging unattended?
No. Lithium-ion batteries should not be left unattended while charging. Use the module in a suitable, protected environment and follow appropriate lithium-ion battery safety practices.
16. Can damaged 18650 cells be used?
No. Do not use damaged, swollen, leaking, or otherwise compromised lithium-ion cells.
17. What is the nominal voltage of a 4S lithium-ion pack?
A typical 4S lithium-ion battery pack has a nominal voltage of approximately 14.8V and a fully charged voltage of approximately 16.8V.Only logged in customers who have purchased this product may leave a review.
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