3.7V 450mAh 602040 Lithium Polymer Battery

Factory Details
Specs
Application
Content
FAQs

Product Details

Lithium batteries exhibit varying discharge rates. Mingyu batteries support a maximum discharge rate of 5.0C, delivering high power output in short durations.

Mingyu lithium battery maintains over 80% capacity after 500 cycles at room temperature,utilizing 0.5C charge and discharge conditions.

Batteries exhibit differential self-discharge rates at 100% and 70% charge states.
Self-discharge is higher at 100% state of charge (SOC) compared to 70% SOC.

Lithium batteries operate within the -20°C to 60°C discharge temperature range.
Mingyu custom low-temperature batteries can be used for -40°C to 55°C operation, catering to diverse outdoor scenarios.

Battery Capacity Testing

Before shipment, each lithium battery undergoes meticulous testing to validate voltage, current, and other essential parameters, ensuring consistency and reliability in performance.

Environmentally Friendly

We use A-grade batteries, eco-friendly, safe and no droplet, energy-saving and environmentally friendly, economical and durable.

Environmentally Friendly

Office Series

AI Intelligent Robot Series

Beauty Series

Pet Series

Smart Home Series

Specification	Recommended content
Product Type	Lithium Polymer Pouch Cell*
Model	602040
Nominal Voltage	3.7V
Rated Capacity	450mAh
Dimensions	Confirm actual drawing
Charging Voltage	Confirm datasheet
Standard Discharge Current	Confirm datasheet
Maximum Discharge Current	Confirm datasheet
Operating Temperature	Confirm datasheet
Cycle Life	Confirm test conditions
Connector	Confirm product configuration
Protection Circuit	Confirm whether included
Customization	Subject to engineering evaluation

3.7 V Li-ion Battery 602040-450mah Lithium Ion Battery Application

Lithium Polymer Battery for Smart Temperature Control Water Bottles

Our batteries for smart temperature control water bottles feature high energy density and low power consumption, supporting continuous temperature display and long-lasting battery life. They adopt a compact design to fit seamlessly into slim bottle structures, delivering stable performance for daily hydration tracking. Besides, they ensure reliable operation even with frequent use, keeping your water temperature visible at all times

Smart insulated cup.jpg

Lithium Polymer Battery for Automatic Pet Feeders

Our batteries for automatic pet feeders feature long cycle life and low self-discharge rate, supporting scheduled feeding and continuous operation even during power outages. They adopt a stable power output design to ensure consistent feeder performance, delivering reliable power for pet care while you’re away. Besides, they maintain long endurance to keep your pets fed on time, with no interruptions to their daily routines.

Automatic pet feeder.jpg

Lithium Polymer Battery for Kids’ Dictionary Scanning Pens

Our batteries for kids’ dictionary scanning pens feature high energy density and quick charging capability, supporting long study sessions with continuous scanning and translation functions. They adopt low-power consumption design to ensure all-day use between charges, delivering stable performance for language learning and homework help. Besides, they provide safe and reliable power for frequent use, keeping kids’ learning tools ready whenever needed.

Intelligent Learning Pen.jpg

Lithium Polymer Battery for Neck & Shoulder Massagers

Our batteries for neck and shoulder massagers feature high energy density and long cycle life, supporting extended massage sessions with multiple intensity levels. They adopt a compact, lightweight design for easy portability, delivering stable power for relaxing massages at home, in the office, or while traveling. Besides, they ensure consistent performance with frequent use, keeping your massage device ready to relieve stress anytime.

Massage device.jpg

Lithium Polymer Battery for Home Blood Pressure Monitors

Our batteries for home blood pressure monitors feature stable voltage output and long cycle life, ensuring accurate and consistent readings for daily health monitoring. They adopt low-power consumption design for extended use between charges, delivering reliable performance for at-home blood pressure tracking. Besides, they maintain consistent operation even with frequent use, supporting uninterrupted health management for the whole family.

Portable blood pressure monitor.jpg

3.7V 450mAh 602040 Lithium Polymer Battery

The 602040 lithium polymer battery is a compact rechargeable battery designed for electronic devices that require a 3.7V nominal voltage and 450mAh rated capacity. Its slim pouch-cell format can support space-conscious product designs where battery dimensions and weight are important considerations.

Mingyu provides lithium battery manufacturing and OEM/ODM customization services for business customers. Depending on project requirements, battery solutions can be evaluated for portable electronics, smart devices, wearable products, sensors and other compact equipment.

Before selecting this battery for your device, please confirm the required operating voltage, peak and continuous current, charging method, available installation space, connector type and operating temperature. Our team can review your requirements and help determine whether the 602040-450mAh model is suitable for your application.

For customized projects, the final battery configuration and technical specifications should be confirmed through engineering evaluation and sample testing. Contact Mingyu to discuss product compatibility, sample availability and bulk-order requirements.

Q1. Are you a battery manufacturer or a trading company?

A:We are a lithium battery manufacturer with production bases in Dongguan, Guangdong, and Baise, Guangxi, China. Our battery manufacturing operations began in 2013. We integrate battery research and development, production, sales and technical support to serve customers seeking direct factory supply and customized battery solutions.
Q2. What types of batteries do you supply?

A:Our product range includes rechargeable lithium polymer batteries, cylindrical cells such as 18650 and 21700, customized battery packs, portable power stations and residential energy storage batteries. We develop solutions for consumer electronics, wearable devices, smart home products, medical equipment, drones, robots and other applications.
Q3. Do you offer OEM/ODM battery customization?

A:Yes. We provide customized battery development based on your device requirements, including capacity, dimensions, voltage and series-parallel configuration. Our team evaluates the application, electrical requirements and installation space to propose a suitable solution. The final design and specifications are confirmed for each project.
Q4. What information should I provide to select a suitable battery?

A:Please share your device application, operating voltage, continuous and peak current, target capacity or runtime, and available battery space. Connector details, protection requirements, operating temperatures and expected order quantity are also helpful. These details allow our technical team to evaluate compatibility and recommend a suitable battery configuration.
Q5. How do you control battery quality?

A:We combine controlled production conditions, automated manufacturing and in-process inspection with reliability testing. Our inspection capabilities include coating thickness measurement, electrode burr inspection, cell moisture measurement, automated open-circuit voltage testing and CCD inspection during winding. Testing requirements are determined according to the battery design and application.
Q6. Can you develop batteries with special performance requirements?

A:Yes. Our development capabilities include fast-charging, extended-cycle-life, semi-solid-state and high- or low-temperature battery solutions. These features are available for selected designs and are not standard across every model. Please provide your performance targets so our team can evaluate feasibility and confirm the relevant specifications and test conditions.
Q7. How can I arrange samples, and what are your MOQ and lead time?

A:Please send the required battery model or specifications, sample quantity and expected production volume. Our sales team will confirm sample availability, minimum order quantity and the delivery schedule for your project. Custom development and testing requirements should be reviewed before the production timeline is finalized.
Q8. What technical and after-sales support do you provide?

A:We provide coordinated support from product, commercial and technical specialists, covering battery selection, project communication and after-sales enquiries. If an issue occurs, please share the battery model, order details, operating conditions and relevant photos or test data so our team can review the issue and advise on the next steps.