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1S 2S 3S 4S 3A 40W Lithium Battery Charging Step-Down Module

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Battery Charger Module for everyday users

The 1S 2S 3S 4S 3A 40W Lithium Battery Charging Step-Down Module is a value-for-money battery charger module designed for everyday users. It features Item Type: Charging Module and Battery support: 1-4 series lithium-ion.

₹669
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Total: ₹669
Buying tip: A smart budget buy — solid performance without breaking the bank.
Estimated delivery: 17 Aug31 Aug
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Quick Specs

Item Type: Charging Module
Battery support: 1-4 series lithium-ion
Max. Power (W): 3
Charging Power (W): 40
Length (mm): 35
Width (mm): 17

Ideal For

Charging smartphones and tabletsPowering accessoriesTravel use
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SKU: robu-3278484Category: Battery Charger Module

About This Product

The 1S 2S 3S 4S 3A 40W Lithium Battery Charging Step-Down Module is a value-for-money battery charger module designed for everyday users. It delivers reliable performance at an accessible price.

Key Specifications

  • Item Type: Charging Module —
  • Battery support: 1-4 series lithium-ion — keeps you powered without frequent recharging
  • Max. Power (W): 3
  • Charging Power (W): 40 —
  • Length (mm): 35
  • Width (mm): 17
  • Weight (g): 06
  • Shipping Weight: 0.01 kg

Why Buy from Pricio?

Pricio sources this product directly, cutting out multiple middlemen. Every order includes free shipping, a 15-day return policy, and secure payment via Razorpay.

This 40W Lithium-Ion Step-Down Charging Module  is designed to charge 1-4 series lithium batteries safely and efficiently. The module supports adjustable charging current, allowing users to fine-tune the charging process depending on battery specifications and power supply capability. The Step-Down Charging Module architecture ensures that the input voltage is stepped down to the correct charging voltage required by lithium battery packs. For proper operation, the input voltage must always be higher than the fully charged battery voltage.

Features:

  1. Supports 1S to 4S lithium-ion battery charging
  2. Adjustable charging current up to 3A
  3. Built-in temperature protection for safer charging
  4. High-quality components for long operational life
  5. Compact and efficient step-down (buck) design
  6. Supports short-circuit protection

Package Includes:

1 x 1S 2S 3S 4S 3A 40W Lithium Battery Charging Step-Down Module

Setup Guide

1
Identify the pins
Locate VCC (power), GND (ground), and data pins (SDA/SCL for I2C, MOSI/MISO for SPI, or TX/RX for UART). Refer to the pinout diagram on the product page.
2
Wire to your microcontroller
Connect VCC to 3.3V or 5V (check the module spec), GND to GND, and data pins to the appropriate GPIO pins on your Arduino or Raspberry Pi.
3
Install libraries
In Arduino IDE, go to Sketch → Include Library → Manage Libraries and search for the sensor library. Install the recommended version.
4
Upload example sketch
Open File → Examples → [library name] → Basic Example. Upload to your board and open Serial Monitor to view output.
5
Calibrate if needed
Some sensors (temperature, humidity, distance) may need a short warm-up period or calibration. Run the calibration sketch if provided.