2S 3A Li-ion Lithium Battery 7.4V 8.4V 18650 Charger Protection Board Module

Premium Quality Electronics from The Engineer Store, Bengaluru

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

Product Overview

This 2S 3A Li-ion Battery Protection & Charging Board is a professional-grade module designed for dual 18650 lithium-ion battery packs. It provides integrated charging control, overcharge protection, overdischarge protection, and short-circuit safety-essential for safe and efficient battery management in portable devices and DIY projects.

Output Voltage: 7.4V (nominal) / 8.4V (fully charged)

Charging Current: 3A maximum

Cell Configuration: 2S (2 cells in series)

Compatible Cells: 18650 Li-ion batteries

Key Specifications

Feature	Details
Product Type	2S Battery Protection & Charging Module
Voltage Range	6.0V - 8.4V
Charge Current	3A maximum
Discharge Current	3A maximum
Cell Type	Li-ion 18650
Configuration	2 cells in series (2S)
Protection Features	Overcharge, overdischarge, short-circuit, overcurrent
Operating Temp	-20 degreesC to +65 degreesC
Origin	Original/Authentic
Warranty	7-day warranty on manufacturing defects coverage
Support	Email & WhatsApp (24/7)

Why Choose This Product?

100% Authentic - Sourced from trusted distributors with verification

Safety First - Multi-layer protection against common battery hazards

Fast Shipping - 1-5 day shipping, 7-8 day delivery from Bengaluru warehouse

Expert Support - Technical assistance available round-the-clock

Reliable Performance - Tested and trusted by professionals

Cost-Effective - Quality protection at competitive pricing

Features & Benefits

Protection Capabilities

• Overcharge Protection - Prevents damage from excessive charging
• Overdischarge Protection - Protects battery from deep discharge
• Short-Circuit Protection - Automatic cutoff on short circuits
• Overcurrent Protection - Limits discharge current to safe levels
• Temperature Monitoring - Safe operation within thermal limits

Design Advantages

• Compact form factor fits standard battery enclosures
• Low self-discharge rate for extended storage
• Reliable MOSFET-based protection circuit
• Easy integration with charging systems
• Durable PCB design for long-term reliability

Applications & Project Ideas

DIY & Hobbyist Projects

• Portable power banks and USB chargers
• Wireless headphones and speakers
• RC toys and drones
• LED flashlights and headlamps
• Custom electronics projects

Professional & Industrial Use

• Backup power systems
• Portable medical devices
• Industrial handheld tools
• Professional photography equipment
• Commercial IoT devices

Learning & Education

• Electronics and battery management courses
• Arduino and embedded systems projects
• Student engineering projects
• Technical skill development
• Hands-on STEM learning

What's Included in the Package

Inside the Box:

• 1x 2S 3A Li-ion Battery Protection Board Module
• Technical documentation and wiring diagram
• Quick start guide
• Support contact information

How to Use

1. Connect Battery Cells - Solder or connect two 18650 cells in series to the B+ and B- terminals
2. Attach Load - Connect your device to the OUT+ and OUT- terminals
3. Charge Safely - Use a compatible charger (3A max) on the CHG+ and CHG- terminals
4. Monitor - Board automatically manages all protection functions

Detailed wiring diagram included in documentation

Technical Support & Service

24/7 Customer Support

• Email: support@theengineerstore.in
• WhatsApp: Available for quick technical queries
• Response Time: Within 2-4 hours

Warranty & Returns

• Warranty Period: 1 year from purchase date
• Coverage: Manufacturing defects and component failures
• Return Policy: 7-day returns for defective units
• Replacement: Free replacement or full refund option

Frequently Asked Questions

Is this board 100% authentic?

Yes, absolutely. All products are sourced from authorized distributors and verified for authenticity before shipment. We stand behind the quality of every component.

What type of charger do I need?

You need a charger rated for 7.4V/8.4V with maximum 3A output. The board includes protection, but using a proper charger ensures optimal performance and battery longevity.

Can I use this with different battery types?

This board is specifically designed for 18650 Li-ion cells in a 2S configuration. Using other battery types may damage the board or create safety hazards.

How fast is shipping?

Standard shipping takes 7-8 days to most locations in India from our Bengaluru warehouse. Express options available for urgent orders.

What warranty coverage is provided?

We offer a comprehensive 7-day warranty on manufacturing defects covering all defects in materials and workmanship. This includes protection circuit failures and PCB issues.

Do you offer bulk/wholesale pricing?

Yes! For orders of 10 units or more, we provide special wholesale discounts. Contact us via email or Wh

Buy 2S 3A Li-ion Lithium Battery 7.4V 8.4V 18650 Charger Protection Board Module Online in India

Purchase the 2S 3A Li-ion Lithium Battery 7.4V 8.4V 18650 Charger Protection Board 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 2S 3A Li-ion Lithium Battery 7.4V 8.4V 18650 Charger Protection Board 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 2S 3A Li-ion Lithium Battery 7.4V 8.4V 18650 Charger Protection Board 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.