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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

Li-ion Battery Series Table Display

Battery Name	Lithium Polymer Battery
Certification	UN38.3 / IEC62133 / KC / CB / UL1642 / UL2054 / BIS / WERCS / PSE / CE / ROHS /CCC
Nominal Voltage	3.7V
Model	Customized as needed
Advantage	5C fast charging technology features, 10 minutes charging more than 80%.
High cycle life technology features, battery life is 3 times that of the industry
Semi-solid-state lithium battery technology features, the cycle life is increased by 30%-50% compared with ordinary liquid<br>batteries, and the battery capacity is increased by 20%
High and low temperature lithium battery technology characteristics, ultra-low temperature 0.2C discharge battery capacity retention rate of more than 70%.
Graphene lithium battery technology features, internal resistance reduced by 30%, cycle doubled, and rate increased by 20%
High energy density technology
OEM/ODM	Thickness range from 2mm to 14mm
Capacity range from 50mAh to 10000mAh+
Mini Lipo Battery High Temperature Battery,LiPo Battery Pack,Uitra Thin LiPoBattery,Smallest LiPo Battery
Cycle life	500 Times
Warranty	12 Months
Appllcatlons	Office Series
Intelligent robot series products
Personal care and beauty products
Smart home series products
Learning and education products
Pet series products
IoT GPS series products
Security products
Wearable products
Health care series products
Tablet PC series products
Model airplane series products

Compact Wireless Electronics

For small wireless devices with limited battery compartments, the 602030 battery may be considered after verifying voltage compatibility, peak current requirements and operating time.

Miniature Sensing Devices

Electronic sensors and portable monitoring modules often require careful selection of battery capacity, dimensions and standby power consumption. A 300mAh rechargeable cell may be suitable for compatible low-power designs.

Portable Learning Accessories

Compact reading accessories, electronic learning tools and similar products may use rechargeable pouch-cell solutions where electrical and mechanical requirements are compatible.

Small Consumer Electronic Products

The battery may also be evaluated for miniature portable electronic accessories requiring a rechargeable power source. Product compatibility must be validated through engineering review and sample testing.

Battery Selection and Customization

Selecting a suitable 602030 battery requires more than matching voltage and rated capacity.

Customers should confirm the following before ordering:

Nominal operating voltage and charging requirements
Continuous and peak operating current
Required operating time
Available battery compartment dimensions
Connector and lead wire specifications
Protection circuit requirements
Environmental and operating temperature conditions
Expected order quantity and destination market

Mingyu can review the supplied information and discuss suitable standard or customized battery solutions.

Battery Quality and Manufacturing Support

Mingyu Energy serves business customers seeking rechargeable lithium battery manufacturing and technical support.

Product evaluation may involve checking dimensional compatibility, capacity requirements, electrical performance and applicable documentation. Testing conditions and inspection arrangements should be confirmed for each project.

Request a Quote for the 602030 300mAh Battery

Are you sourcing a 3.7V 300mAh rechargeable lithium polymer battery for a new electronic product or an existing device?

Contact Mingyu Energy with your technical requirements, desired quantity, sample needs and delivery destination. Our team can review your project and discuss available options for battery supply and customization.

602030 3.7V 300mAh Lithium Polymer Battery

Product Overview

The 602030 3.7V 300mAh lithium polymer battery is a compact rechargeable pouch cell intended for electronic products where limited installation space and low battery capacity requirements must be considered together.

With a nominal voltage of 3.7V, a rated capacity of 300mAh and nominal energy of 1.11Wh, this battery can be evaluated as a power source for compatible miniature electronic devices and portable accessories.

Mingyu Energy supplies rechargeable lithium battery solutions to international equipment manufacturers, product developers and distributors. Our manufacturing and technical teams support battery selection, specification evaluation and OEM/ODM development according to customer 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.