Why Battery Swelling Happens in Wearable Devices?
I often meet teams after swelling complaints appear. The product looks finished, the launch is…
Products
702530 500mAh Lipo Battery ROHS
The 702530 3.7V 500mAh LiPo Battery is designed for portable electronic devices that require stable voltage output, reliable capacity, and flexible battery pack customization. With a 3.7V nominal voltage and 500mAh capacity, this battery is suitable for Bluetooth devices, IoT sensors, portable monitors, handheld electronics, wearable devices, and other rechargeable electronic products.
As a professional lithium polymer battery manufacturer, LithoTop provides customized 702530 LiPo battery solutions, including connector selection, wire length, PCM protection, NTC, cable direction, battery labels, shrink wrap, packaging, and OEM/ODM battery pack assembly.
Additional information
| Product Type | Li-Polymer battery |
|---|---|
| Model number | 702530 |
| Voltage (Nominal) | 3.7V |
| Capacity (Nominal) | 500mAh |
| Dimensions | 7.0±0.2*25±0.5*30±2.5mm |
| Constant Discharge Current | Typically 0.5C-1C |
| Working Temperature | charge: 0-45℃; discharge: -20-60℃ |
| Certification | ROHS |
Professional Grade A Lipo Battery Solutions
Delivering superior performance consistency and longer cycle life through automated cell matching technology designed for heavy-duty industrial applications.
The 702530 3.7V 500mAh LiPo battery is designed for compact devices that need a practical balance between battery size, runtime, and stable rechargeable performance. Its lithium polymer pouch structure makes it suitable for slim enclosures, sensor modules, wireless devices, handheld products, and portable rechargeable systems.
With 500mAh capacity, this battery can support control boards, Bluetooth modules, wireless transmission circuits, LED indicators, small displays, sensors, and standby operation. It is a suitable option for product developers who need more runtime than micro LiPo batteries while still keeping the device compact and lightweight.
LithoTop applies strict production control during cell selection, capacity testing, voltage inspection, internal resistance testing, PCM assembly, aging verification, appearance inspection, and final quality control. These processes help ensure stable battery performance, reliable safety protection, and consistent mass production quality.
- 500mAh Practical Capacity
Provides reliable runtime for compact electronic products and portable rechargeable devices. - Stable 3.7V LiPo Platform
Supports control boards, Bluetooth modules, wireless circuits, sensors, LED indicators, and standby systems. - PCM Protection Available
Supports overcharge, over-discharge, over-current, and short-circuit protection for safer operation. - Low Self-Discharge Performance
Suitable for devices requiring standby operation, periodic use, and stable storage performance. - Strict Quality Inspection
Each battery is checked for voltage, capacity, internal resistance, appearance, and consistency before shipment. - Custom Battery Pack Assembly
Supports customized wires, connectors, PCM, NTC, labels, shrink wrap, and packaging according to project needs.
- Bluetooth accessories
- IoT sensor devices
- Portable air quality monitors
- Handheld measuring instruments
- Wireless remote controllers
- Smart personal care devices
- Wearable electronic products
- Electronic badges
- Portable medical electronics
- Compact consumer electronics
7mm Thickness Flat Lipo Battery
| Models | Voltage(V) | Capacity(mAh) | Cell Dimensions(mm) | Shape |
|---|---|---|---|---|
| 701220 | 3.7 | 110 | 7.0*12*20mm | Rectangle |
| 701250 | 3.7 | 420 | 7.0*12*50mm | Rectangle |
| 701255 | 3.7 | 450 | 7.0*12*54mm | Rectangle |
| 701421 | 3.7 | 160 | 7.0*14*21mm | Rectangle |
| 701430 | 3.7 | 250 | 7.0*14*30mm | Rectangle |
| 701435 | 3.7 | 250-10C | 7.0*14*35mm | Rectangle |
| 701435 | 3.7 | 300 | 7.0*14*35mm | Rectangle |
| 701525 | 3.7 | 200 | 7.0*15*25mm | Rectangle |
| 701530 | 3.7 | 260 | 7.0*15*30mm | Rectangle |
| 701535 | 3.7 | 350 | 7.0*15*35mm | Rectangle |
| 701540 | 3.7 | 390 | 7.0*15*40mm | Rectangle |
| 701727 | 3.7 | 320 | 7.0*17*27mm | Rectangle |
| 701732 | 3.7 | 330 | 7.0*17*32mm | Rectangle |
| 701734 | 3.7 | 350 | 7.0*17*34mm | Rectangle |
| 701738 | 3.7 | 400 | 7.0*17*38mm | Rectangle |
| 701818 | 3.7 | 150 | 7.0*18*18mm | Rectangle |
| 701821 | 3.7 | 180 | 7.0*18*21mm | Rectangle |
| 701831 | 3.7 | 350 | 7.0*18*31mm | Rectangle |
| 701840 | 3.7 | 500 | 7.0*18*40mm | Rectangle |
| 701843 | 3.7 | 580 | 7.0*18*43mm | Rectangle |
| 701850 | 3.7 | 650 | 7.0*18*50mm | Rectangle |
| 701870 | 3.7 | 850 | 7.0*18*70mm | Rectangle |
| 701920 | 3.7 | 200 | 7.0*19*20mm | Rectangle |
| 701935 | 3.7 | 520 | 7.0*19*35mm | Rectangle |
| 701950 | 3.7 | 630 | 7.0*19*50mm | Rectangle |
| 702020 | 3.7 | 200 | 7.0*20*20mm | Rectangle |
| 702024 | 3.7 | 300 | 7.0*20*24mm | Rectangle |
| 702025 | 3.7 | 220-20C | 7.0*20*25mm | Rectangle |
| 702025 | 3.7 | 300 | 7.0*20*25mm | Rectangle |
| 702028 | 3.7 | 380 | 7.0*20*28mm | Rectangle |
| 702030 | 3.7 | 400 | 7.0*20*30mm | Rectangle |
| 702030 | 3.7 | 350-10C | 7.0*20*30mm | Rectangle |
| 702030 | 3.7 | 300-20C | 7.0*20*30mm | Rectangle |
| 702035 | 3.7 | 480 | 7.0*20*35mm | Rectangle |
| 702040 | 3.7 | 500 | 7.0*20*40mm | Rectangle |
| 702050 | 3.7 | 750 | 7.0*20*50mm | Rectangle |
| 702060 | 3.7 | 850 | 7.0*20*60mm | Rectangle |
| 702174 | 3.7 | 1300 | 7.0*21*74mm | Rectangle |
| 702265 | 3.7 | 1000 | 7.0*22*65mm | Rectangle |
| 702525 | 3.7 | 400 | 7.0*24*25mm | Rectangle |
| 702530 | 3.7 | 500 | 7.0*25*30mm | Rectangle |
| 702535 | 3.7 | 600 | 7.0*25*35mm | Rectangle |
| 702540 | 3.7 | 700 | 7.0*25*40mm | Rectangle |
| 702542 | 3.7 | 750 | 7.0*25*42mm | Rectangle |
| 702548 | 3.7 | 880 | 7.0*25*48mm | Rectangle |
| 702659 | 3.7 | 1300 | 7.0*26*59mm | Rectangle |
| 702728 | 3.7 | 480 | 7.0*27*28mm | Rectangle |
| 702831 | 3.7 | 630 | 7.0*28*31mm | Rectangle |
| 702950 | 3.8 | 1400 | 7.0*29*50mm | Rectangle |
| 703030 | 3.7 | 650 | 7.0*30*30mm | Rectangle |
| 703035 | 3.7 | 700 | 7.0*30*35mm | Rectangle |
| 703040 | 3.7 | 800 | 7.0*30*40mm | Rectangle |
| 703048 | 3.7 | 1000 | 7.0*30*48mm | Rectangle |
| 703060 | 3.7 | 1300 | 7.0*30*60mm | Rectangle |
| 703065 | 3.7 | 1600 | 7.0*30*65mm | Rectangle |
| 7030100 | 3.7 | 1790 | 7.0*30*100mm | Rectangle |
| 703448 | 3.7 | 1400 | 7.0*34*48mm | Rectangle |
| 703450 | 3.7 | 1500 | 7.0*34*50mm | Rectangle |
| 703455 | 3.7 | 1300 | 7.0*34*55mm | Rectangle |
| 703465 | 3.7 | 1700 | 7.0*34*65mm | Rectangle |
| 704050 | 3.7 | 1600 | 7.0*40*50mm | Rectangle |
| 704060 | 3.7 | 2000 | 7.0*40*60mm | Rectangle |
| 704070 | 3.7 | 2500 | 7.0*40*70mm | Rectangle |
| 704268 | 3.7 | 2200 | 7.0*42*68mm | Rectangle |
| 704345 | 3.8 | 2100 | 7.0*43*45mm | Rectangle |
| 704560 | 3.8 | 2700 | 7.0*45*60mm | Rectangle |
| 706090 | 3.7 | 5000 | 7.0*60*90mm | Rectangle |
| 7060100 | 3.7 | 6000 | 7.0*60*100mm | Rectangle |
| 713450 | 3.7 | 1500 | 7.1*34*50mm | Rectangle |
| 721616 | 3.7 | 130 | 7.2*16*16mm | Rectangle |
| 722035 | 3.7 | 520 | 7.2*20*35mm | Rectangle |
| 722060 | 3.7 | 1000 | 7.2*20*60mm | Rectangle |
| 722932 | 3.8 | 900 | 7.2*29*32mm | Rectangle |
| 725084 | 3.7 | 3300 | 7.2*50*84mm | Rectangle |
| 732950 | 3.7 | 1000 | 7.3*29*50mm | Rectangle |
| 735590 | 3.7 | 4000 | 7.3*55*90mm | Rectangle |
| 7470100 | 3.7 | 6000 | 7.4*70*100mm | Rectangle |
| 751525 | 3.7 | 230 | 7.5*15*25mm | Rectangle |
| 751528 | 3.7 | 280 | 7.5*15*28mm | Rectangle |
| 751530 | 3.7 | 300 | 7.5*15*30mm | Rectangle |
| 751535 | 3.7 | 380 | 7.5*15*35mm | Rectangle |
| 751540 | 3.8 | 490 | 7.5*15*40mm | Rectangle |
| 751542 | 3.8 | 550 | 7.5*15*42mm | Rectangle |
| 751728 | 3.7 | 280 | 7.5*17*28mm | Rectangle |
| 751732 | 3.7 | 250 | 7.5*17*32mm | Rectangle |
| 751818 | 3.7 | 200 | 7.5*18*18mm | Rectangle |
| 752020 | 3.7 | 250 | 7.5*20*20mm | Rectangle |
| 752035 | 3.7 | 500 | 7.5*20*35mm | Rectangle |
| 752040 | 3.7 | 600 | 7.5*20*40mm | Rectangle |
| 752233 | 3.7 | 450 | 7.5*22*33mm | Rectangle |
| 752240 | 3.8 | 850 | 7.5*22*40mm | Rectangle |
| 752530 | 3.7 | 520 | 7.5*25*30mm | Rectangle |
| 752535 | 3.7 | 600 | 7.5*25*35mm | Rectangle |
| 752648 | 3.7 | 900 | 7.5*26*48mm | Rectangle |
| 753048 | 3.7 | 1200 | 7.5*30*48mm | Rectangle |
| 753536 | 3.8 | 1200 | 7.5*35*36mm | Rectangle |
| 754555 | 3.7 | 2500 | 7.5*45*55mm | Rectangle |
| 755060 | 3.7 | 3000 | 7.5*50*60mm | Rectangle |
| 755590 | 3.7 | 5000 | 7.5*55*90mm | Rectangle |
| 781548 | 3.7 | 500 | 7.8*15*48mm | Rectangle |
| 781920 | 3.7 | 240-5C | 7.8*19*20mm | Rectangle |
| 782035 | 3.7 | 500-5C | 7.8*20*35mm | Rectangle |
| 782526 | 3.7 | 460 | 7.8*25*26mm | Rectangle |
| 783048 | 3.8 | 1500 | 7.8*30*48mm | Rectangle |
| 7565113 | 3.7 | 7000 | 7.5*65*113mm | Rectangle |
| 7565121 | 3.7 | 8000 | 7.5*65*121mm | Rectangle |
| 762022 | 3.7 | 260 | 7.6*20*22mm | Rectangle |
| 773942 | 3.7 | 1700 | 7.7*39*42mm | Rectangle |
| 781350 | 3.7 | 500 | 7.8*13*50mm | Rectangle |
| 782035 | 3.7 | 500 | 7.8*20*35mm | Rectangle |
| 782035 | 3.7 | 500-3C | 7.8*20*35mm | Rectangle |
| 783048 | 3.7 | 1200 | 7.8*30*48mm | Rectangle |
*Contact us for custom LiPo battery or customize your special battery !
Customer Development Story
Discover how we helps global customers solve real-world battery challenges through customized lithium battery solutions.
01 – Belgium Portable Air Quality Monitor Project with RoHS Support
A Belgian environmental technology company was developing a portable indoor air quality monitor for offices, classrooms, and shared workspaces. The device needed to power gas sensors, a small display, Bluetooth communication, LED indicators, and periodic data logging. The customer’s early prototype used a smaller battery, but the runtime was not enough for a full working day of intermittent monitoring.
The customer contacted LithoTop because they needed a compact rechargeable LiPo battery with better capacity, stable output during sensor sampling, customized connector assembly, and RoHS support for the European market. LithoTop reviewed the monitor’s sensor current, display usage time, Bluetooth transmission interval, charging circuit, enclosure size, cable routing, and expected daily operation.
After evaluation, LithoTop recommended the 702530 3.7V 500mAh LiPo Battery. Our engineering team judged that the 500mAh capacity offered a suitable runtime improvement while still fitting the customer’s slim handheld enclosure. LithoTop also customized the connector type, wire length, PCM protection, label format, and insulation method according to the customer’s assembly process.
During sample development, LithoTop supported capacity verification, sensor operation simulation, Bluetooth pulse testing, display load testing, charging compatibility checking, standby evaluation, and installation fit validation. Because the product was planned for European distribution, LithoTop also supported the customer with RoHS documentation preparation for the battery project.
Before mass production, both teams confirmed samples, electrical performance, connector durability, battery dimensions, label details, packaging requirements, and incoming inspection standards. The final battery solution helped the customer improve daily runtime while keeping the monitor compact and easy to carry. For the customer, this reduced charging complaints, improved product reliability, and supported smoother RoHS preparation for European sales.
02 – Chile Mining Helmet Communication Module Project
A Chilean industrial safety equipment company was developing a rechargeable communication module installed on mining helmets. The device needed to power a low-power radio circuit, status LED, emergency alert button, and vibration notification function. The product had to remain compact and lightweight because it was attached to safety helmets used during long underground shifts.
The customer approached LithoTop after testing several standard batteries that were either too thick for the module housing or unable to maintain stable voltage during alert vibration and wireless signal transmission. They needed a battery manufacturer that could evaluate both electrical performance and mechanical integration for a rugged industrial wearable device.
LithoTop analyzed the module’s standby current, radio transmission peak, vibration motor load, LED indication cycle, charging method, enclosure structure, cable outlet direction, and expected shift duration. Based on this evaluation, LithoTop recommended the 702530 3.7V 500mAh LiPo battery as a compact rechargeable power source.
During prototype development, LithoTop optimized the PCM protection design, wire routing, connector position, insulation layer, and outer packaging method to improve assembly reliability. Sample batteries were tested through wireless pulse discharge testing, vibration alert simulation, voltage stability checking, charge-discharge cycling, storage testing, and installation fit evaluation inside the helmet-mounted module.
Before pilot production, the customer confirmed approved sample performance, cable durability, battery dimensions, packaging method, connector reliability, and batch inspection requirements. LithoTop then controlled production according to the confirmed golden sample.
The final battery solution helped the helmet communication module maintain stable power during alerts and wireless transmission while keeping the product compact. For the customer, this improved worker safety communication reliability, reduced battery-related design risk, and supported a stronger field trial in mining environments.
Why Choose LithoTop for 702530 LiPo Battery Solutions?
Factory Support
A reliable 702530 LiPo battery requires more than a standard cell model. Battery performance depends on capacity consistency, voltage stability, internal resistance control, PCM protection design, connector reliability, cable outlet direction, insulation method, and final aging inspection.
LithoTop supports customers from sample evaluation to mass production with professional engineering support, flexible customization, strict production inspection, and project-based documentation support. Our team can help evaluate battery size, runtime target, charging method, operating current, protection circuit, connector type, NTC requirement, and real application conditions before confirming the final battery solution.
More Customer Cooperation Cases
Powering leading batteries across wearables, medical devices, IoT, and consumer electronics in 30+ countries..
Smart Bands
A European wearable technology company was developing a new smart fitness band with strict requirements for battery thickness, cycle life, and safety. Their device needed a lightweight LiPo battery that could fit into a compact wristband while support monitoring and Bluetooth connectivity.
Portable Medical Monitor
A startup company focusing on smart health products needed a flexible battery solution for their next-generation fitness monitoring wearable. The device design was slim and curved, requiring a customized LiPo battery with precise dimensions and stable charging performance.
Portable Translator
A customer from Asia was developing a portable AI translation device for travel and business communication. The product required a battery with stable voltage output, compact size, and long standby performance to support voice processing and wireless transmission.
Handling Precautions & Guidelines
Find answers to the most common questions about ordering, shipping, certifications, and working with lithotop as your battery partner.
Engineer’s will make inner BOM according to your confirmed samples. And our quality control teams continuously monitor the entire manufacturing process to ensure the each mass production is the same as samples.
LithoTop specializes in custom lithium battery solutions, including LiPo batteries, Li-ion battery packs, LiFePO4 batteries, high-rate drone batteries, curved batteries, ultra-thin batteries, and custom rechargeable battery packs for industrial and consumer applications.
LithoTop focuses on:Custom battery solutions for special applications, own developed PCB/PCM to help you with Competitive factory-direct pricing, Experience with difficult battery projects such as curved, ultra-thin, and high-discharge batteries. Long-term cooperation support for startups and established brands.
Yes. LithoTop provides fully customized battery solutions based on your device requirements, including voltage, capacity, discharge rate, dimensions, connector type, PCM/BMS protection, and special shapes such as curved or ultra-thin batteries.
Standard samples are usually available quickly about 3-7 days, while custom battery projects typically require evaluation, engineering confirmation, prototyping, and testing. The timeline depends on battery specifications, and certification requirements. Mass order is about 30 working days.
Depending on the product and project requirements, LithoTop batteries can support certifications including UN38.3, MSDS, CE, RoHS, IEC62133, UL , and other transportation or safety compliance documents.
MOQ depends on the battery model and customization level. Standard batteries may support lower quantities like 100pcs, while fully customized battery projects usually require a development MOQ. LithoTop supports both prototype projects and mass production orders.
LithoTop follows strict quality control procedures including:Incoming material inspection, Cell matching and grading Capacity, and voltage testing, Aging and performance tests, 100% Safety inspections before shipment.Quality consistency is critical for battery reliability and long-term cooperation.
Normally, we ship our batteries via DHL, UPS, FedEx, air freight, or sea , depending on order size, destination, and customer preference.
Yes. LithoTop can support project-based certification and documentation requirements such as KC, CE, RoHS, UN38.3, MSDS, and other battery-related documents according to customer market requirements.
Related Products
Explore more customized lithium battery solutions from LithoTop
-
ROHS 603450 1200mAh LiPo battery pack
Add to cart -
CE 652530 500mAh Rechargeable LiPo Battery
Add to cart -
Small 401520 100mAh Li-polymer Battery
Add to cart -
CE 603048 1000mAh Polymer Battery
Add to cart -
503450 1000mAh LiPo Battery CE ROHS
Add to cart -
702530 500mAh Lipo Battery ROHS
Add to cart -
KC certified 103450 2000mAh polymer battery
Add to cart -
CB KC 105080 5000mAh Rechargeable Battery
Add to cart
Our Factory Insight
LithoTop operates advanced lithium battery manufacturing facilities equipped with automated production lines, precision testing equipment, and strict quality control systems. From cell selection to battery assembly and final inspection, every process is carefully managed to ensure stable performance, reliable quality, and high production efficiency. With experienced engineers and strong OEM/ODM capability, we provide customized battery solutions for customers worldwide.
Global Certifications & Compliance Support
LithoTop provides comprehensive certification support for custom lithium batteries to help customers accelerate product development and global market entry. From prototype verification to mass production, our engineering team assists with battery compliance, transportation documentation, and international safety standards, reducing certification risks and shortening your project timeline.
Industry News Insight
Stay updated with the latest lithium battery industry news, product innovations, technology insights, and application trends from LithoTop. Explore expert articles, battery guides, and industry updates to learn more about custom lithium battery solutions, energy storage, UAV batteries, wearable device batteries, and advanced power technologies.
What Is the Difference Between LiPo and Li-ion Battery Packs?
Confusion costs time, money, and reliability. I see teams argue labels. They miss the real…
The Biggest Mistake When Choosing a UAV Battery Supplier?
You ask for a price quote. The supplier sends a number. You compare three quotes…
Talk to Engineer
Get Your Factory-Direct Quote
