Why Battery Swelling Happens in Wearable Devices?
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The 602133 3.8V 550mAh High Voltage Battery is a compact rechargeable lithium polymer battery designed for electronic devices that require higher energy density, stable voltage output, and longer runtime within limited internal space. With a 3.8V high-voltage platform and 550mAh capacity, this battery is suitable for smart glasses, Bluetooth devices, wearable electronics, IoT sensors, portable medical devices, smart trackers, and compact consumer electronics.
As a professional lithium polymer battery manufacturer, LithoTop provides customized 602133 high voltage battery solutions, including connector selection, wire length, PCM protection, NTC, cable direction, labels, shrink wrap, packaging, and OEM/ODM battery pack assembly.
| Product Type | High Voltage Lipo Battery |
|---|---|
| Model number | 602133 |
| Voltage (Nominal) | 3.8V |
| Capacity (Nominal) | 550mAh |
| Dimensions | 6.0±0.2*21±0.5*33±2.5mm |
| Constant Discharge Current | Typically 0.5C-1C |
| Working Temperature | charge: 0-45℃; discharge: -20-60℃ |
Delivering superior performance consistency and longer cycle life through automated cell matching technology designed for heavy-duty industrial applications.

The 602133 3.8V 550mAh high voltage battery is engineered for compact products that need more usable energy than standard 3.7V lithium polymer batteries. The 3.8V high-voltage chemistry supports a higher charging platform, helping improve energy density and extend device operating time without significantly increasing battery size.
With 550mAh capacity, this battery provides a strong balance between compact structure, lightweight design, and reliable runtime. It is especially suitable for smart electronic devices that require stable power for wireless communication, sensors, processors, displays, audio modules, and standby operation.
LithoTop applies strict production control during cell selection, capacity testing, voltage inspection, internal resistance testing, aging verification, appearance checking, and final quality inspection. These processes help ensure stable battery performance, reliable safety, and consistent mass production quality.


| Model | Voltage(V) | Capacity(mAh) | Size(T*W*L)mm | Shape |
|---|---|---|---|---|
| 07350V3 | 3.8 | 150 | 7*35 | Cylindrical |
| 302535V3 | 3.8 | 310 | 3*25*35 | Pouch |
| 321255V3 | 3.8 | 220 | 3.2*12*55 | Pouch |
| 332226V3 | 3.8 | 220 | 3.3*22*26 | Pouch |
| 351423V3 | 3.8 | 115 | 3.5*14*23 | Pouch |
| 352028V3 | 3.8 | 220 | 3.5*20*28 | Pouch |
| 381140V3 | 3.8 | 200 | 3.8*11*40 | Pouch |
| 401026V3 | 3.8 | 95 | 4*10*26 | Pouch |
| 402546V3 | 3.8 | 640 | 4*25*46 | Pouch |
| 412527V3 | 3.8 | 320 | 4.1*25*27 | Pouch |
| 421355V3 | 3.8 | 300 | 4.2*13*55 | Pouch |
| 431268V3 | 3.8 | 430 | 4.3*12*68 | Pouch |
| 444271V3 | 3.8 | 2100 | 4.4*42*71 | Pouch |
| 450930V3 | 3.8 | 130 | 4.5*9*30 | Pouch |
| 452328V3 | 3.8 | 330 | 4.5*23*28 | Pouch |
| 462028V3 | 3.8 | 280 | 4.6*20*28 | Pouch |
| 462427V3 | 3.8 | 370 | 4.6*24*27 | Pouch |
| 462428V3 | 3.8 | 400 | 4.6*24*28 | Pouch |
| 502023V3 | 3.8 | 230 | 5*20*23 | Pouch |
| 502530V3 | 3.8 | 450 | 5*25*30 | Pouch |
| 534562V3 | 3.8 | 2350 | 5.3*45*62 | Pouch |
| 582926V3 | 3.8 | 620 | 5.8*29*26 | Pouch |
| 582938V3 | 3.8 | 850 | 5.8*29*38 | Pouch |
| 592830V3 | 3.8 | 750 | 5.9*29*30 | Pouch |
| 601015V3 | 3.8 | 75 | 6*10*15 | Pouch |
| 602227V3 | 3.8 | 380 | 6*22*27 | Pouch |
| 602830V3 | 3.8 | 680 | 6*28*30 | Pouch |
| 603030V3 | 3.8 | 750 | 6*30*30 | Pouch |
| 604048V3 | 3.8 | 1650 | 6*40*48 | Pouch |
| 604347V3 | 3.8 | 1700 | 6*43*47 | Pouch |
| 605050V3 | 3.8 | 2100 | 6*50*50 | Pouch |
| 652831V3 | 3.8 | 800 | 6.5*28*31 | Pouch |
| 654552V3 | 3.8 | 2000 | 6.5*45*52 | Pouch |
| 693572V3 | 3.8 | 2700 | 6.9*35*72 | Pouch |
| 702025V3 | 3.8 | 400 | 7*20*25 | Pouch |
| 704347V3 | 3.8 | 2000 | 7*43*47 | Pouch |
| 755275V3 | 3.8 | 4500 | 7.5*52*75 | Pouch |
| 803763V3 | 3.8 | 2960 | 8*37*63 | Pouch |
| 902523V3 | 3.8 | 500 | 9*25*23 | Pouch |
| 902554V3 | 3.8 | 1600 | 9*25*54 | Pouch |
| 902624V3 | 3.8 | 620 | 9*26*24 | Pouch |
| 902628V3 | 3.8 | 850 | 9*26*28 | Pouch |
| 104357V3 | 3.8 | 3500 | 10*43*57 | Pouch |
| 123258V3 | 3.8 | 2800 | 12*32*58 | Pouch |
*Contact us for more Li-Po batteries or customize your special battery!
Discover how we helps global customers solve real-world battery challenges through customized lithium battery solutions.
A Swedish wearable technology company was developing lightweight smart glasses for translation, voice interaction, and daily productivity use. The product needed to power Bluetooth communication, microphones, speakers, a control board, and standby functions while keeping the temple area slim and comfortable.
The customer contacted LithoTop because their previous standard battery could fit the structure, but the runtime was not strong enough during continuous audio and wireless operation. They needed a high energy density battery that could improve usable operating time without making the glasses thicker or heavier.
LithoTop reviewed the smart glasses layout, standby current, audio load, Bluetooth transmission peak, charging circuit, cable routing, and target runtime. After evaluation, LithoTop recommended the 602133 3.8V 550mAh High Voltage Battery. Our engineering team judged that the 3.8V high-voltage platform could provide more usable energy than a standard 3.7V battery, while the 550mAh capacity offered a good balance between runtime and wearable comfort.
During sample development, LithoTop optimized the connector type, wire length, PCM protection option, cable outlet direction, and battery label to match the customer’s narrow assembly space. Sample testing included audio playback simulation, Bluetooth transmission testing, charging compatibility checking, voltage stability testing, temperature monitoring, and installation fit verification.
Before mass production, both teams confirmed samples, battery dimensions, connector specifications, charging requirements, labeling details, and batch inspection standards. The final battery solution helped the smart glasses achieve longer use time and more stable wireless performance. For the customer, this improved user experience and supported a smoother product launch.
An Australian medical electronics company was developing a compact portable monitoring device used for daily health data collection. The device required stable power for a sensor module, data processor, wireless communication, LED indicator, and standby operation. Because the product needed to be carried comfortably, the battery space was limited.
The customer approached LithoTop after testing several standard LiPo batteries that either had insufficient runtime or required too much internal space. They needed a battery manufacturer that could evaluate actual operating conditions and provide a stable custom battery solution for future production.
LithoTop analyzed the device’s operating current, wireless transmission interval, charging method, enclosure layout, safety protection requirements, and expected daily usage pattern. Based on this analysis, LithoTop recommended the 602133 3.8V 550mAh high voltage lithium polymer battery.
During prototype development, LithoTop adjusted the PCM protection design, connector position, wire length, insulation structure, and packaging method. Sample batteries were tested through continuous operation simulation, wireless transmission pulse testing, voltage stability checking, charge-discharge cycling, storage testing, and installation fit verification.
Before mass production, the customer confirmed the approved sample, electrical performance, connector durability, packaging details, and incoming inspection standard. LithoTop then controlled production according to the confirmed golden sample.
The final battery solution helped the monitoring device operate more reliably during daily use and reduced unexpected low-power shutdowns. For the customer, this improved end-user confidence, reduced battery-related after-sales concerns, and made the product more competitive in the portable medical electronics market.
High voltage lithium polymer batteries require more than a higher nominal voltage. To achieve reliable performance, the battery must control material stability, voltage consistency, internal resistance, thickness tolerance, cycle performance, charging compatibility, and protection circuit design.
LithoTop supports customers from sample development to mass production with professional engineering support and strict quality inspection. Our team can help evaluate battery size, runtime target, charging voltage, working current, connector type, PCM design, NTC requirement, and real application conditions before confirming the final battery solution.
Powering leading batteries across wearables, medical devices, IoT, and consumer electronics in 30+ countries..



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. High voltage LiPo batteries usually require a compatible high-voltage charging circuit, such as a 4.35V/4.4V charging platform. The charging design should be confirmed before sample testing and mass production.
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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.
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.
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.
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