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10W 3.7V 4.2V 3A Overcharge Protection Module

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Battery Protection Board for everyday users

The 10W 3.7V 4.2V 3A Overcharge Protection Module is a value-for-money battery protection board designed for everyday users. It features Rated Voltage (VDC): 3.7 and Max Current (A): 3.

₹603
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Total: ₹603
Buying tip: A smart budget buy — solid performance without breaking the bank.
Estimated delivery: 24 Aug7 Sept
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Quick Specs

Rated Voltage (VDC): 3.7
Max Current (A): 3
Power Rating: 10
Battery Type: 18650 LI-ION
Length (mm): 12
Width (mm): 09

Ideal For

Hobbyist flyingOutdoor recreationKids entertainment
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SKU: robu-3230316Category: Battery Protection Board

About This Product

The 10W 3.7V 4.2V 3A Overcharge Protection Module is a value-for-money battery protection board designed for everyday users. It delivers reliable performance at an accessible price.

Key Specifications

  • Rated Voltage (VDC): 3.7 — works with standard household power
  • Max Current (A): 3
  • Power Rating: 10
  • Battery Type: 18650 LI-ION — keeps you powered without frequent recharging
  • Length (mm): 12
  • Width (mm): 09
  • Weight (g): 03
  • Operating Voltage (V): 2.7~5.5 — works with standard household power

Why Buy from Elecvora?

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

The 10W 3.7V–4.2V 3A Overcharge Protection Module is designed for safe and reliable charging of single-cell 18650 Li-ion batteries. Based on TP4056 architecture, this protection board provides overcharge, over-discharge, and overcurrent protection to extend battery life and prevent damage. It supports up to 3A current handling and ensures stable 4.2V cutoff voltage for safe charging. Compact and lightweight, it is ideal for DIY battery packs, portable electronics, and embedded power systems.


Features:

  1. Supports 3.7V Li-ion batteries
  2. 4.2V precise charge cutoff
  3. 3A current handling capacity
  4. Overcharge protection
  5. Over-discharge protection
  6. Overcurrent protection
  7. Designed for 18650 batteries
  8. Compact PCB design

Package Includes:

1 x 10W 3.7V 4.2V 3A Overcharge Protection 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.