1S-4S 5V–26V 3A 40W Lithium Battery Charger Module with Step-Down Current

Power your lithium battery projects with confidence using this versatile 1S–4S Lithium Charger Module. Designed for makers, engineers, and electronics enthusiasts, this compact SMD module delivers up to 3A / 40W of adjustable step-down charging current across a wide input voltage range of 5V to 26V. Whether you're building battery packs, DIY power banks, RC projects, or embedded systems, this module offers the flexibility and reliability you need.

Key Features

Wide Input Voltage: Supports 5V–26V input, compatible with a broad range of power supplies
Multi-Cell Compatibility: Charges 1S through 4S lithium battery configurations
Adjustable Step-Down Current: Programmable output up to 3A for precise charging control
High Power Dissipation: Rated at 40W for demanding applications
Built-In Temperature Protection: Operating range of 0–120°C with thermal safeguard
SMD Package: Compact surface-mount design for easy integration into PCB layouts
Customizable: Adjustable settings to match your specific battery and project requirements
Condition: Brand new

Specifications

Input Voltage	5V – 26V
Max Charge Current	3A
Max Power Dissipation	40W
Battery Compatibility	1S – 4S Lithium
Operating Temperature	0°C – 120°C
Package Type	SMD
Quantity Options	1PC, 5PCS, 10PCS

What's in the Box

1S–4S 5V–26V 3A 40W Lithium Charger Module (quantity per selected option)

Perfect For

DIY battery pack assembly and management
RC vehicles and drone battery charging circuits
Portable power bank builds
Embedded electronics and Arduino/Raspberry Pi power projects
Prototyping and hobbyist electronics workbenches

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Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: What battery types is the 1S–4S Lithium Charger Module compatible with?

A: This charger module is designed for lithium-ion and lithium polymer (LiPo) batteries in 1S, 2S, 3S, or 4S cell configurations. It supports an input voltage range of 5V to 26V, making it compatible with most standard power adapters and USB power supplies (with sufficient wattage).

Q: Can I adjust the charging current on this module?

A: Yes. The step-down design allows you to adjust the output charging current up to a maximum of 3A. This gives you precise control over charging speed and heat management, making it suitable for both small single-cell packs and larger multi-cell configurations.

Q: How many modules do I receive per order?

A: This product is available in three quantity options: 1PC, 5PCS, or 10PCS. Simply select your preferred quantity before adding to cart. Bulk options offer great value for prototyping or production runs.

Q: Does this module include temperature protection?

A: Yes. The module features built-in thermal management with an operating temperature range of 0°C to 120°C, helping to maintain stable performance and protect both the module and your batteries during the charging process.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.