12V MPPT Solar Panel Controller CN3722 3S Lithium Li-ion 18650 Battery Charge Controller Module

Premium Solar Charging Solution from The Engineer Store, Bengaluru

Fast shipping 7-day warranty on manufacturing defects 24/7 expert support

Product Overview

The CN3722 is a high-efficiency MPPT (Maximum Power Point Tracking) solar charge controller specifically designed for 3S lithium-ion battery systems. This intelligent module optimizes solar panel output to deliver maximum charging efficiency, making it ideal for off-grid solar applications, portable power systems, and renewable energy projects.

Key Features

MPPT Technology - Automatically tracks maximum power point for 30-40% more efficiency than standard PWM controllers

3S Li-ion Compatible - Perfectly calibrated for 3-cell lithium 18650 battery packs (9-12.6V nominal)

12V System Rated - Handles 12V solar panels and battery configurations

Compact Design - Small form factor ideal for space-constrained applications

Smart Protection - Over-charge, over-discharge, short-circuit, and temperature protection

LED Indicators - Real-time status monitoring

Wide Input Range - Compatible with various solar panel voltages

Technical Specifications

Parameter	Details
Input Voltage	6-60V (Solar Panel)
Output Voltage	12V (3S Li-ion nominal)
Charging Current	Up to 20A (adjustable)
Efficiency	95%+
Protection Features	Over-voltage, Over-current, Over-temperature, Reverse polarity
Operating Temp	-10 degreesC to +60 degreesC
Dimensions	Compact PCB module
Weight	Lightweight
Warranty	7-day warranty on manufacturing defects

Why Choose This Controller?

Maximum Efficiency

MPPT algorithm extracts up to 40% more power from solar panels compared to traditional PWM controllers, reducing charging time significantly.

Lithium-Optimized

Purpose-built for 3S Li-ion battery chemistry with proper charging curves and cell balancing protection.

Reliable & Safe

Multiple protection layers prevent damage to batteries and connected devices-ideal for unattended remote installations.

Authentic & Verified

100% original product sourced directly from authorized distributors with full authentication.

Expert Support

Get technical guidance from electronics professionals via email and WhatsApp (24/7).

Applications & Project Ideas

DIY & Hobbyist Projects

• Portable solar power banks
• Off-grid cabin power systems
• Solar-powered IoT devices
• Emergency backup power systems
• Drone battery charging stations

Professional & Commercial

• Solar energy storage systems
• RV/Camper power management
• Boat/Marine solar installations
• Industrial remote monitoring systems
• Telecom tower backup power

Educational & Learning

• Renewable energy courses
• Electronics engineering projects
• Solar technology demonstrations
• Skill development workshops

What's Included

In the Box:

• CN3722 MPPT Solar Controller Module
• Technical datasheet and user manual
• Quick start guide
• Email/WhatsApp support access
• Warranty documentation

Shipping & Delivery

Fast Delivery: 7-8 days to most of India from Bengaluru warehouse

Location: The Engineer Store, Bengaluru

Secure Packaging: Professional packaging to prevent damage

Quality Assurance

100% Authentic - Verified from authorized suppliers

7-day warranty on manufacturing defects - Full manufacturer coverage

Quality Tested - Each unit tested before shipment

Expert Support - Technical team available 24/7

Frequently Asked Questions

Is this controller compatible with my 3S Li-ion battery pack?

Yes, the CN3722 is specifically designed for 3S lithium-ion systems (9-12.6V nominal). It includes proper charging curves and protection for Li-ion chemistry.

What's the difference between MPPT and PWM controllers?

MPPT controllers track the maximum power point of your solar panel in real-time, delivering 30-40% more charging power than PWM controllers. They're more efficient but slightly more expensive-worth it for larger systems.

Can I use this with different solar panel voltages?

Yes! The CN3722 accepts input from 6-60V solar panels, making it compatible with various panel configurations (12V, 24V, 36V panels can all be used).

Is this 100% authentic?

Absolutely. We source directly from authorized distributors with full authentication verification. Every unit is tested before shipment.

What warranty do I get?

7-day warranty on manufacturing defects covering all defects in materials and workmanship. Free replacement or refund for defective units within 7 days.

How fast is shipping?

7-8 days to most locations in India from our Bengaluru warehouse. Express shipping options available.

Do you provide technical support?

Yes! Full technical support via email and WhatsApp 24/7. Our electronics experts can help with installation, troubleshooting, and optimization.

What's your return policy?

7-day returns on manufacturing defects only with full refund

Buy 12V MPPT Solar Panel Controller CN3722 3S Lithium Li-ion 18650 Battery Charge Controller Module Online in India

Purchase the 12V MPPT Solar Panel Controller CN3722 3S Lithium Li-ion 18650 Battery Charge Controller Module online at The Engineer Store - India's most trusted electronics components store. We deliver across all major cities including Bengaluru, Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata, Ahmedabad, Jaipur, and Surat. Get the best price on 12V MPPT Solar Panel Controller CN3722 3S Lithium Li-ion 18650 Battery Charge Controller Module with fast 1-5 day shipping from our Bengaluru warehouse. All products are 100% authentic, sourced from authorized distributors with 7-day warranty on manufacturing defects.

Looking to buy 12V MPPT Solar Panel Controller CN3722 3S Lithium Li-ion 18650 Battery Charge Controller Module at the best price in India? The Engineer Store offers competitive pricing, bulk discounts for orders of 10+ units, and dedicated technical support via email and WhatsApp. Whether you are a hobbyist, student, or professional engineer, we have everything you need for your electronics projects.