The Complete Guide to the 702040 3.7V 500mAh Lithium Polymer Battery

In the modern world, lithium polymer (LiPo) batteries are integral to a wide range of portable electronic devices, offering high energy density, 

safety, and versatility. One of the standout products in our battery lineup is the 702040 3.7V 500mAh LiPo battery, which offers a perfect balance 

between compactness, power, and reliability.

At our company, we specialize in producing high-quality lithium batteries that adhere to the strictest safety and performance standards. Our 

702040 3.7V 500mAh battery comes with UL1642, IEC62133(CB), CE, UN38.3, and WERCS certifications, ensuring it meets global safety 

requirements. Whether you are looking for a reliable battery for a consumer product, medical device, or industrial equipment, this battery offers 

the power and dependability you need.

Key Specifications of the 702040 3.7V 500mAh LiPo Battery

To better understand the features of this battery, let's dive into its technical specifications:

Model: 702040

Nominal Voltage: 3.7V

Nominal Capacity: 500mAh

Size: 7.0mm (Thickness) x 20mm (Width) x 40mm (Length)

Weight: Approx. 12g

Charge Cut-off Voltage: 4.2V

Discharge Cut-off Voltage: 3.0V

Continuous Discharge Current: 0.5C (250mAh)

Cycle Life: 500 cycles (with 80% capacity retention)

Operating Temperature: -20°C to 60°C (discharge), 0°C to 45°C (charge)

Certifications: UL1642, IEC62133(CB), CE, UN38.3, WERCS

Key Features and Benefits of the 702040 3.7V 500mAh LiPo Battery

Compact and Lightweight

The 702040 is designed to be compact and lightweight, making it ideal for space-constrained applications. With a weight of just 12g and a 

compact size of 7mm in thickness, it can easily fit into various devices that require a small form factor without compromising on battery life.

High Energy Density

The 3.7V 500mAh configuration ensures that this battery provides a steady and reliable source of power for small to medium-sized devices. 

Lithium polymer batteries are known for their high energy density, meaning that this battery can deliver consistent performance over extended 

periods without significant weight or size increase.

Safety and Compliance

The 702040 LiPo battery is certified under several rigorous standards, including UL1642, IEC62133(CB), CE, UN38.3, and WERCS. These 

certifications ensure that the battery complies with international safety, transportation, and environmental regulations, providing peace of mind 

to both manufacturers and end-users.

Long Cycle Life

Designed for longevity, the 702040 500mAh battery maintains 80% of its capacity even after 500 charge-discharge cycles, offering an excellent 

lifespan for applications that require regular battery replacements or long-term use.

Wide Range of Operating Temperatures

The 702040 battery can operate efficiently in a wide range of temperatures, making it suitable for devices used in diverse environments. With an 

operational temperature range of -20°C to 60°C during discharge and 0°C to 45°C during charging, this battery can handle varying climatic 

conditions, which is essential for outdoor or industrial applications.

Applications of the 702040 3.7V 500mAh LiPo Battery

The 702040 3.7V 500mAh battery is versatile and can be used in a variety of applications, including:

Wearable Devices

Smartwatches

Fitness trackers

Health monitoring devices

Smart glasses

Medical Devices

Portable diagnostic tools

Hearing aids

Wireless medical equipment

Blood glucose meters

Consumer Electronics

Bluetooth headsets and speakers

Portable power banks

GPS devices

Digital cameras

IoT (Internet of Things) Applications

Remote sensors

Smart home devices

Wearable fitness trackers

Smart remote controllers

Toys and Hobby Devices

Remote-controlled toys

Miniature robots

Arduino projects

Why Choose the 702040 3.7V 500mAh LiPo Battery?

High-Quality Manufacturing

At our factory, we utilize top-quality raw materials and state-of-the-art manufacturing techniques to ensure that each battery delivers consistent, 

high-quality performance. The 702040 LiPo battery undergoes thorough testing to meet our stringent quality control standards.

Customizable Solutions

We understand that every application is unique. That's why we offer custom battery solutions to meet your specific needs. Whether it's adjusting 

the battery capacity, voltage, or adding a PCM (Protection Circuit Module), we can tailor the battery design to fit your exact requirements.

Reliable and Experienced Supplier

With years of experience in the lithium battery industry, we have built a reputation for reliability and customer satisfaction. Whether you need a 

small quantity of samples or large-scale production runs, we are here to meet your needs. Our team offers fast response times and exceptional 

customer support.

Competitive Pricing

We provide the 702040 3.7V 500mAh LiPo battery at competitive prices, ensuring you receive high value for your investment. Our flexible pricing 

tiers for large orders make it an ideal choice for both small startups and large enterprises.

Safe Handling and Usage

For optimal performance and safety, we recommend the following guidelines for handling and using the 702040 3.7V 500mAh LiPo battery:

Charging: Always use a compatible LiPo charger with built-in overcharge protection. Never exceed the 4.2V charge cut-off to avoid battery 

damage.

Storage: Store the battery in a cool, dry place, ideally at room temperature. Avoid exposing the battery to extreme temperatures or humidity.

Discharging: Ensure the battery is not discharged below 3.0V to prevent damage to the cell.

Safety Protection: It is recommended to incorporate a PCM to protect against overcharging, over-discharging, and short circuits.

Disposal: Properly dispose of the battery according to local regulations for electronic waste.

Ordering and Customization Options

We offer flexible ordering options to accommodate both small orders and large-scale production. Customization options include:

Wire length and connectors

Custom labels and packaging

BMS (Battery Management System)

Protection Circuit Module (PCM)

To request a quote or discuss specific requirements, feel free to contact our sales team for assistance. We are committed to providing the best 

battery solutions for your needs.

Conclusion

The 702040 3.7V 500mAh LiPo battery is a versatile, reliable, and safe power source for a variety of applications, including wearable devices, 

medical tools, IoT products, and more. With certifications like UL1642, IEC62133(CB), CE, UN38.3, and WERCS, this battery meets global 

standards, ensuring excellent performance and safety.

Contact us today to learn more about the 702040 3.7V 500mAh LiPo battery or to place an order. We are here to help you power your 

innovations with high-quality lithium batteries.