3.7 Volt Lithium Ion Battery Pack (4400 mAh): Reliable, Safe, and Versatile Power Solution

Lithium-ion batteries have become the gold standard for powering modern electronic devices, thanks to their high energy density, reliability, and long lifespan. The 3.7 Volt Lithium Ion Battery Pack with a capacity of 4400 mAh is a prime example of these qualities. Designed for versatility and safety, this battery pack is the perfect choice for a variety of applications, from hobby projects to professional-grade devices. 

 
Key Specifications

Voltage: 3.7 volts nominal, 4.35 volts cut-off
Capacity: 4400 mAh
Cells: Two 18650 cylindrical lithium-ion cells
Charging Current: Maximum 4.3 amps
Discharging Current: Maximum 7 amps (regulated by polyswitch)
Protection Circuit Board (PCB): 8-amp rating for overcharge, overdischarge, and short circuit protection
Dimensions: 65mm x 37mm x 18mm
Weight: 6 ounces
Wiring: 18-gauge wire leads
Packaging: PVC shrink-wrapped for durability
These specifications highlight the battery pack’s compact yet powerful design, making it an excellent fit for a wide array of power needs.

 
Key Features

1. High Energy Density

At 4400 mAh, the 3.7 Volt Lithium Ion Battery Pack provides a substantial amount of energy, allowing devices to operate for extended periods between charges. This high capacity makes it ideal for power-hungry applications like robotics, lighting, and remote-controlled (RC) vehicles.

2. Built-in Protection Circuit Board (PCB)

Safety is a top priority for any lithium-ion battery, and this pack delivers with a robust protection circuit board (PCB):

Overcharging Protection: Prevents damage caused by excessive charging voltage.
Overdischarging Protection: Safeguards the battery from deep discharges that can reduce its lifespan.
Overcurrent and Short Circuit Protection: Shields both the battery and connected devices from excessive current or short circuits.
The 8-amp PCB ensures the battery operates within safe limits, enhancing both performance and longevity.

3. Polyswitch for Additional Safety

A 7-amp polyswitch adds an extra layer of protection by limiting the maximum discharging current. It also protects against reverse polarity, ensuring safe operation in various environments and reducing the risk of damage during installation or use.

4. Compact and Lightweight Design

Weighing only 6 ounces and measuring 65mm x 37mm x 18mm, this battery pack is:

Easy to integrate into tight spaces.
Lightweight enough for applications where portability is essential, such as drones or handheld devices.
5. Durable Construction

The battery pack is encased in a PVC shrink wrap, providing protection against physical damage and environmental factors. The inclusion of 18-gauge wire leads ensures durability and ease of connection during installation.

 
Applications

The versatility of the 3.7 Volt Lithium Ion Battery Pack makes it a popular choice for a wide range of devices and projects. Here are some of its most common applications:

1. Bike Lighting

Why Use It: Cyclists often require reliable and long-lasting lighting systems for safety and navigation. This battery pack provides consistent power for high-lumen bike lights.
Benefits:
Lightweight design minimizes added weight to the bike.
Long-lasting charge supports extended rides.
2. Remote-Controlled (RC) Toys

Why Use It: RC cars, airplanes, and drones demand high energy output and reliable performance.
Benefits:
Compact size fits easily into RC vehicles.
High discharging current supports powerful motors and fast movements.
3. Robotics

Why Use It: Robotics projects often need a compact, reliable power source to drive motors, sensors, and microcontrollers.
Benefits:
High capacity supports long operational periods.
PCB protection ensures safety during intensive operations.
4. Cameras and Portable Electronics

Why Use It: Portable electronics like cameras, external DVD players, and handheld devices require stable power for optimal performance.
Benefits:
Long-lasting power supports uninterrupted usage.
Compact design integrates seamlessly into portable devices.
5. DIY and Custom Projects

Why Use It: Makers and DIY enthusiasts often need flexible power solutions for their custom-built devices.
Benefits:
Easy to wire and install with 18-gauge leads.
Compact dimensions fit into custom enclosures.
 
Advantages of the 3.7 Volt Lithium Ion Battery Pack

1. Long-Lasting Performance

With its 4400 mAh capacity, the battery pack delivers extended runtimes for demanding applications. Whether powering a robot or an outdoor lighting system, you can rely on its performance to last through prolonged use.

2. Fast and Efficient Charging

The battery pack supports a maximum charging current of 4.3 amps, enabling quick recharges without compromising safety or performance.

3. Enhanced Safety

The combination of the PCB and polyswitch provides comprehensive protection, reducing risks associated with lithium-ion batteries. This ensures the battery is safe to use in professional, hobbyist, and everyday applications.

4. Compact and Lightweight

Despite its powerful capabilities, the battery pack is small and lightweight, making it suitable for applications where size and weight are critical factors.

5. Environmentally Friendly

Lithium-ion technology is more environmentally friendly than older chemistries like NiCd, as it offers higher efficiency and fewer harmful materials.

 
Why Choose the 3.7 Volt Lithium Ion Battery Pack?

This battery pack excels in providing reliable, long-lasting power with enhanced safety features. It’s ideal for anyone seeking a power solution for DIY projects, RC toys, lighting systems, or robotics. Its lightweight and compact design make it perfect for portable applications, while the PCB and polyswitch ensure safe operation.

Who Should Use It?

DIY Enthusiasts: Perfect for custom projects requiring a reliable and compact power source.
Hobbyists: Ideal for RC vehicles, drones, and other toys.
Professionals: Great for robotics, cameras, and portable devices where dependable power is critical.
 

The 3.7 Volt Lithium Ion Battery Pack (4400 mAh) is a powerful, safe, and versatile power source suitable for a wide range of applications. With its high energy density, compact design, and built-in safety features, it’s an excellent choice for both personal and professional projects. Whether you’re powering a bike light, building a robot, or enhancing your RC car, this battery pack provides the reliability and performance you need.

Invest in the 3.7 Volt Lithium Ion Battery Pack and power your projects with confidence, knowing you’re using a cutting-edge solution designed for safety, efficiency, and long-lasting performance.