2S 8.4V 2A 18650 Lithium Battery Charger Module Type C

Description

2S 8.4V 2A 18650 Lithium Battery Charger Module Type C

This charger module is designed for charging 18650 lithium-ion batteries connected in series (2S configuration) with a total charging voltage of 8.4V. It features a USB Type-C input, compact size, and user-friendly operation, making it ideal for DIY power banks, portable electronics, and battery-powered projects.

Key Specifications
Cell Configuration: 2-cell (2S) lithium-ion, compatible with two 18650 cells in series.
Charge Method: CC/CV (Constant Current/Constant Voltage) charging.
Input Interface: USB Type-C port, accepts 5V input.
Maximum Input Current: Up to 2A.
Charge Current: Approximately 1.1A (for the 2A version).
Final Charge Voltage: 8.4V total (4.2V per cell).
Boost Mode: Integrated step-up converter for 2S charging.
Protection Features
Overcharge protection to prevent exceeding 4.2V per cell.
Overcurrent and short-circuit protection.
Likely includes over-discharge protection and thermal regulation.
LEDs & Status Indicators
Charging indicator LED (typically red).
Charge complete indicator LED (typically green or blue).
Features Overview
Cell Compatibility: 2 x 18650 in series
Input: USB-C 5V up to 2A
Output: Boosted to 8.4V for full charge
Max Charge Current: ~1.1A (for 2A version)
Protections: Overcharge, overcurrent, short-circuit, thermal
Status LEDs: Included for charging status feedback
Recommended Power Source: 5V USB Type-C power supply (not compatible with PD chargers)
Typical Dimensions & Usage
Approximate size: 39 × 18 × 6 mm
Weight: Around 5g
Operating temperature: –40°C to +85°C
Suitable for DIY power banks, battery packs, and portable electronics
Important Notes:
Use a standard 5V USB-C power supply. Avoid using USB Power Delivery (PD) chargers that may require voltage negotiation.
When connecting two cells in series, ensure the cells are properly balanced to maintain charging efficiency and battery safety.
Ideal for DIY power bank projects, portable chargers, and custom lithium battery applications.