Tel: +86 18029163505
WhatsApp: +86 18029163505 
Email: sales@miyoenergy.com
3.7 V Li-ion Battery 30~500mAh
Explore 3.7V Li-ion batteries ranging from 30mAh to 500mAh, ideal for lightweight devices like fitness trackers, medical equipment, and wireless sensors. With high energy density and reliable performance, these batteries deliver precision and longevity.
502030 3.7V 250mAh Rechargeable Lithium Polymer Battery
  • 502030 3.7V 250mAh Rechargeable Lithium Polymer Battery
  • 502030 3.7V 250mAh Rechargeable Lithium Polymer Battery
  • 502030 3.7V 250mAh Rechargeable Lithium Polymer Battery
  • 502030 3.7V 250mAh Rechargeable Lithium Polymer Battery
  • 502030 3.7V 250mAh Rechargeable Lithium Polymer Battery
  • 502030 3.7V 250mAh Rechargeable Lithium Polymer Battery
  • 502030 3.7V 250mAh Rechargeable Lithium Polymer Battery
  • 502030 3.7V 250mAh Rechargeable Lithium Polymer Battery
  • 502030 3.7V 250mAh Rechargeable Lithium Polymer Battery
  • 502030 3.7V 250mAh Rechargeable Lithium Polymer Battery
  • 502030 3.7V 250mAh Rechargeable Lithium Polymer Battery
  • 502030 3.7V 250mAh Rechargeable Lithium Polymer Battery

502030 3.7V 250mAh Rechargeable Lithium Polymer Battery

  • Model: 502030
  • SKU: YXE502030
The 502030 3.7V 250mAh lithium polymer battery is a compact rechargeable pouch cell for electronic devices with limited battery space and modest power requirements. Featuring 0.925Wh nominal energy, it offers an option for compatible miniature electronics and low-power accessories. Mingyu supports OEM/ODM battery customization, technical evaluation and bulk supply for global B2B customers.
  • Functions reliably even at -40℃, ideal for harsh environments.
  • A stable 3.7 V output ensures consistent power delivery for various electronics.
  • Extended cycle life maximizes usage, ensuring cost efficiency.
  • Built-in protections against overcharging, over-discharging, and short circuits for secure performance.
  • Tailored for diverse device needs with customizable capacities and sizes.

250mAh Rechargeable Battery Capacity

The 502030 lithium polymer battery offers a nominal voltage of 3.7V and a rated capacity of 250mAh, corresponding to 0.925Wh of nominal energy. It can be evaluated for electronic products with relatively low energy requirements. Actual operating time depends on device current consumption and operating conditions.

Compact Pouch Cell Structure

The 502030 battery features a compact pouch-cell format for products with limited internal space. Before integration, engineers should verify the actual cell dimensions, thickness tolerance, wire direction and available installation clearance.

Battery Compatibility Evaluation

Selecting the right battery requires matching the cell with the device's electrical characteristics. Mingyu can assist in reviewing required voltage, charging method, continuous discharge current, peak current and expected operating time.

OEM/ODM Battery Configuration

Mingyu supports the evaluation of customized battery requirements, including connector types, lead wire arrangements and protection configurations. Final specifications and customization options are subject to engineering confirmation.


Environmentally Friendly

Product Model

502030

SKU

YXE502030

Battery Type

Lithium Polymer Pouch Cell

Nominal Voltage

3.7V

Rated Capacity

250mAh

Nominal Energy

0.925Wh

Cell Configuration

Single Cell

Dimensions

Refer to approved drawing

Weight

Confirm with datasheet

Charging Voltage

Confirm with datasheet

Standard Charging Current

Confirm with datasheet

Maximum Discharge Current

Confirm with datasheet

Operating Temperature

Confirm with datasheet

Cycle Life

Subject to verified test conditions

Protection Circuit

Configuration dependent

Connector Type

Subject to project requirements


Miniature Wireless Accessories

Compact wireless accessories often require rechargeable battery solutions that balance capacity, device size and operating time. The 502030 250mAh battery may be evaluated for compatible designs after confirming voltage, operating current and battery compartment dimensions.

Low-Power IoT Sensors

Small IoT sensors may require rechargeable power sources for periodic sensing and wireless data transmission. Battery selection should account for standby consumption, transmission current peaks and expected charging intervals.

Portable Electronic Learning Tools

Selected electronic learning accessories, such as compact reading devices and handheld educational tools, may use small lithium polymer pouch cells. Compatibility depends on power consumption, charging circuit design and installation space.

Compact Wearable Electronics

Miniature wearable electronics often have strict requirements for cell thickness, weight and usable capacity. The 502030 battery can be considered where its verified mechanical and electrical characteristics match the device requirements.


How to Select the 502030 3.7V 250mAh Battery

The 502030 250mAh lithium polymer battery is a compact rechargeable cell intended for consideration in small electronic products. Selecting an appropriate battery requires an understanding of the device's electrical requirements, installation limitations and expected usage patterns.

Understanding Battery Capacity and Runtime

The 502030 cell has a rated capacity of 250mAh and nominal voltage of 3.7V, providing 0.925Wh of nominal energy.

Battery runtime cannot be determined from capacity alone. It depends on the device's average current consumption, peak load, discharge cutoff voltage, operating temperature and other conditions.

For initial estimates, engineers can compare rated capacity with average current consumption. Actual performance should be verified through testing under representative device operating conditions.

Checking Battery Dimensions and Installation Space

The 502030 model designation should not replace an approved technical drawing.

Before finalizing a battery design, confirm actual cell thickness, width, length and tolerances. Adequate installation clearance and suitable mechanical protection are important for pouch-cell integration.

Device manufacturers should also consider wiring direction, connector positioning and available space for any required protection circuit.

Charging and Protection Requirements

A 3.7V nominal lithium-ion polymer cell requires an appropriate charging method and protective measures.

Customers should confirm the charging voltage, charging current, discharge current limits and battery protection requirements according to the approved product datasheet.

Whether the supplied battery includes an integrated protection circuit depends on the selected configuration.

OEM/ODM Battery Development Support

Mingyu Energy provides lithium battery manufacturing and technical support for equipment manufacturers, product developers and international distributors.

Our team can evaluate battery requirements involving:

  • Required voltage and rated capacity

  • Available battery installation space

  • Continuous and peak current requirements

  • Charging specifications

  • Connector type and lead wire arrangement

  • Protection circuit configuration

  • Environmental operating conditions

  • Production quantity and delivery requirements

Customized battery configurations are subject to technical feasibility, sample confirmation and project-specific requirements.

Quality Control and Product Documentation

Battery selection and supply should be supported by suitable technical documentation and quality verification.

Mingyu can discuss product datasheets, technical drawings, available testing documentation and applicable compliance information for the selected battery configuration.

Customers importing lithium batteries should verify the relevant transportation, product safety and market requirements for their destination country.

Request a Quote for the 502030 250mAh Battery

Looking for a 502030 3.7V 250mAh rechargeable lithium polymer battery for a compact electronic product?

Contact Mingyu Energy with your device requirements, battery specifications, estimated purchasing quantity and destination country.

Our team can review your request and discuss battery selection, sample arrangements, customization requirements and bulk-order quotations.


  • Q1. Are you a battery manufacturer or a trading company?
  • Q2. What types of batteries do you supply?
  • Q3. Do you offer OEM/ODM battery customization?
  • Q4. What information should I provide to select a suitable battery?
  • Q5. How do you control battery quality?
  • Q6. Can you develop batteries with special performance requirements?
  • Q7. How can I arrange samples, and what are your MOQ and lead time?
  • Q8. What technical and after-sales support do you provide?
Share the page to
High Energy Density
It stores large amounts of energy in a smaller and lighter package
Longer Cycle Life
Withstands extensive charge and discharge cycles
Low Self-Discharge
Maintains power longer when not in use
Safety
Minimizes the risk of accidents and ensures safe operation
Related Products
View More Batteries
Related Articles
Are you a battery manufacturer or a trading company?
WearealithiumbatterymanufacturerwithproductionbasesinDongguan,Guangdong,andBaise,Guangxi,China.Ourbatterymanufacturingoperationsbeganin2013.Weintegratebatteryresearchanddevelopment,production,salesand……
Mingyu + 2026-10-26
What types of batteries do you supply?
Ourproductrangeincludesrechargeablelithiumpolymerbatteries,cylindricalcellssuchas18650and21700,customizedbatterypacks,portablepowerstationsandresidentialenergystoragebatteries.Wedevelopsolutionsforcon……
Mingyu + 2026-10-26
Do you offer OEM/ODM battery customization?
Yes.Weprovidecustomizedbatterydevelopmentbasedonyourdevicerequirements,includingcapacity,dimensions,voltageandseries-parallelconfiguration.Ourteamevaluatestheapplication,electricalrequirementsandinsta……
Mingyu + 2026-10-26
What information should I provide to select a suitable battery?
Pleaseshareyourdeviceapplication,operatingvoltage,continuousandpeakcurrent,targetcapacityorruntime,andavailablebatteryspace.Connectordetails,protectionrequirements,operatingtemperaturesandexpectedorde……
Mingyu + 2026-10-26
Get a Free Quote Now!
Your Trusted Partner for Advanced Battery Solutions!
Please fill out the form with your contact details or give us a call, and we will get back to you within 24 hours.
Contact Us
  • WhatsApp/Skype
    +86 18029163505
  • Hotline
    +86 18029163505
  • Email
    sales@miyoenergy.com
Follow Us
Copyright © 2026 Mingyu Battery. All rights reserved.