Original 8.4V 2A Auto Cut Power Supply Adapter Price in Bangladesh

The Original 8.4V 2A Auto Cut Power Supply Adapter is a compact charging adapter designed for compatible rechargeable battery applications requiring an 8.4V charging output. With a rated output of 8.4V DC and up to 2A current, it is commonly associated with 2S lithium-ion battery packs, where two cells are connected in series.

The adapter is designed to provide a controlled DC charging supply and incorporates automatic charging termination according to its internal charging-control design. This makes it more suitable for compatible battery charging applications than an ordinary fixed-voltage DC power adapter.

It can be useful for rechargeable battery packs used in portable electronics, DIY projects, lighting equipment, robotics, and other battery-powered systems. However, battery chemistry, pack configuration, connector polarity, and charging requirements must always be verified before use.

Overview of 8.4V 2A Auto Cut Adapter

A 2S lithium-ion battery pack typically consists of two Li-ion cells connected in series. A conventional 3.7V nominal Li-ion cell reaches approximately 4.2V at full charge, so a correctly designed 2S Li-ion charging system uses an approximately 8.4V charging voltage.

The 8.4V 2A adapter is intended for compatible charging applications where the battery pack and charging circuit are designed for this voltage.

The term auto cut generally refers to the charger’s ability to terminate or significantly reduce charging when the battery reaches the appropriate full-charge condition. The exact charging behavior depends on the adapter’s internal circuitry and the battery system being charged.

What Is an 8.4V 2S Battery Charger?

An 8.4V 2S charger is designed for a two-cell series lithium-ion battery configuration. Each conventional Li-ion cell has a nominal voltage of approximately 3.6–3.7V and a maximum charging voltage of approximately 4.2V.

When two compatible cells are connected in series, the nominal pack voltage is approximately 7.2–7.4V and the full-charge voltage is approximately 8.4V.

A suitable charger must provide the correct charging voltage and charging behavior for the battery chemistry and configuration. An 8.4V charger should not be used for battery packs with a different cell count or chemistry unless the manufacturer specifically confirms compatibility.

Key Features

• 8.4V DC charging output
• Up to 2A rated output current
• Auto-cut charging design
• Suitable for compatible 2S Li-ion battery applications
• Compact adapter-style construction
• Convenient solution for rechargeable battery charging
• Designed for controlled DC charging
• Suitable for selected DIY battery packs
• Useful for compatible portable electronics
• Practical for battery-powered projects
• Ready-to-use adapter format
• Suitable for electronics and battery applications

Technical Specifications

Important: The exact input-voltage range, DC plug dimensions, polarity, LED indicator behavior, protection features, and certification markings can vary between adapter versions. Verify the label on the specific product before connecting it to a battery pack.

Working Principle

The adapter converts the available AC input into a controlled DC output suitable for its intended charging application. During charging, the adapter supplies energy to a compatible battery pack while maintaining the required charging voltage.

For a conventional 2S Li-ion pack, the charging voltage approaches 8.4V as the cells become fully charged. The charger’s internal control circuitry manages the charging process and provides automatic termination or reduction of charging current when the appropriate charging condition is reached.

The exact charging profile depends on the design of the adapter. Therefore, this adapter should only be used with battery packs that explicitly match its intended voltage, chemistry, and charging requirements.

Applications

The 8.4V 2A Auto Cut Power Supply Adapter can be used for compatible applications such as:

• 2S Li-ion battery charging
• Rechargeable battery packs
• DIY battery-powered electronics
• Portable electronic devices
• LED lighting battery packs
• Robotics battery projects
• RC electronics where compatible
• DIY power-bank-style battery systems
• Small electronic equipment
• Rechargeable equipment maintenance
• Electronics prototyping
• Compatible 2-cell series battery systems

Advantages

The main advantage of this adapter is its dedicated 8.4V charging output for compatible 2S lithium-ion battery systems. The 2A rated output can provide a practical charging current for appropriately designed battery packs.

Its automatic charging termination feature also provides more suitable charging behavior than using an ordinary unregulated DC power source.

The enclosed adapter format makes it convenient for users who need a ready-to-use charging solution without designing a separate AC-to-DC charging circuit.

Limitations

This adapter is not a universal battery charger. An 8.4V output does not automatically mean that it is suitable for every rechargeable battery with a similar nominal voltage.

Battery chemistry, number of cells, cell arrangement, required charging current, connector polarity, and battery-management circuitry must all be compatible.

The 2A rating represents the adapter’s rated output capability and does not mean every battery pack should be charged at 2A. The appropriate charging current depends on the battery cells and pack design.

Installation and Usage Tips

Before using the adapter, verify that the battery pack is a compatible 2S lithium-ion configuration and that its required full-charge voltage is 8.4V.

Check the adapter’s DC plug size and polarity against the battery charging input. Never force an incompatible connector into a charging socket.

If the battery pack uses a separate BMS or protection circuit, ensure the charging arrangement is compatible with that BMS and the cell configuration.

Do not use the adapter with damaged, swollen, leaking, overheated, or otherwise defective batteries. Charge batteries in a suitable environment and follow the battery manufacturer’s charging requirements.

Avoid modifying the adapter or bypassing its built-in charging-control features.

Why Choose the 8.4V 2A Auto Cut Adapter?

The 8.4V 2A Auto Cut Power Supply Adapter is a convenient option for compatible 2S lithium-ion battery charging applications. Its dedicated output voltage, 2A rating, and automatic charging-control design make it suitable for many appropriately designed rechargeable battery systems.

For DIY electronics builders and battery-pack users, it provides a compact alternative to building a mains-powered charging circuit from individual components.

Why Buy from ElectroXBD?

ElectroXBD is a trusted source for reliable electronic parts in Bangladesh, supplying components, modules, power supplies, battery accessories, Arduino products, robotics parts, and other electronics.

The Original 8.4V 2A Auto Cut Power Supply Adapter is suitable for customers looking for a dedicated charging adapter for compatible battery applications.

ElectroXBD
Trusted Source for Reliable Electronic Parts
Office: H#1/1, Opposite of RH Chhatrabash, Vodra-Talaimari Road, Rajshahi
Website: electroxbd.com
Contact: 01600334238

Frequently Asked Questions (FAQ)

1. What is an 8.4V 2A adapter used for?

The adapter is primarily intended for compatible rechargeable battery systems requiring an 8.4V charging output, particularly suitable 2S lithium-ion battery packs.

2. Can I use this adapter to charge a 2S Li-ion battery?

Yes, when the battery pack is specifically designed for 8.4V full charging and the connector, polarity, and charging-current requirements are compatible.

3. What does auto cut mean on an 8.4V charger?

Auto cut generally means the charger is designed to automatically terminate or significantly reduce charging when the battery reaches its intended full-charge condition.

4. Is 8.4V 2A suitable for every 7.4V battery?

No. A battery’s nominal voltage alone is not enough to determine charger compatibility. The battery chemistry, cell configuration, charging voltage, charging current, and connector must all match.

5. What battery configuration normally uses an 8.4V charger?

An 8.4V charger is commonly used with a 2S conventional lithium-ion battery pack, where two cells are connected in series and the full-charge voltage is approximately 8.4V.

6. Does the 2A rating mean the battery always receives 2A?

No. The actual charging current depends on the battery, charging circuitry, battery condition, and adapter characteristics. The 2A specification indicates the adapter’s rated output capability.

7. Can this adapter be used without checking connector polarity?

No. Connector dimensions and polarity must be verified before use. An incompatible polarity can damage the battery system or electronics.

8. Where can I buy an 8.4V 2A Auto Cut Power Supply Adapter in Bangladesh?

You can buy the Original 8.4V 2A Auto Cut Power Supply Adapter from ElectroXBD, a trusted electronics components supplier in Bangladesh.

Common Questions:

Q: What is the price of Original 8.4V 2A Auto Cut Power Supply Adapter in Bangladesh?

A: The latest price of Original 8.4V 2A Auto Cut Power Supply Adapter in Bangladesh is 240 BDT.

Q: Where to buy Original 8.4V 2A Auto Cut Power Supply Adapter in Bangladesh?

A: You can buy the Original 8.4V 2A Auto Cut Power Supply Adapter at the best price from ElectroXBD in Bangladesh.