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156825 3.8V 18mAh Smart Ring Battery
The 156825 3.8V 18mAh Smart Ring Battery is designed for compact wearable electronic devices that require thin structure, lightweight design, stable voltage output, and high space utilization. With a 3.8V high-voltage platform and 18mAh capacity, this battery is suitable for smart rings, biometric monitoring rings, wearable sensors, health tracking devices, electronic tags, and miniature curved electronics.
As a professional lithium polymer battery manufacturer, LithoTop provides customized smart ring battery solutions, including curved battery design, cell size customization, labels, packaging, and OEM/ODM battery pack assembly.
Additional information
| Product Type | Curved Lipo battery |
|---|---|
| Model number | 156825 |
| Voltage (Nominal) | 3.8V |
| Capacity (Nominal) | 18mAh |
| Dimensions | 1.5±0.2*6.8±0.2*25±0.2mm (R10.7) |
| Constant Discharge Current | Typically 0.2C-1C |
| Working Temperature | charge: 0-45℃; discharge: -20-60℃ |
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 156825 3.8V 18mAh smart ring battery is engineered for miniature wearable products where internal space is extremely limited. Smart rings usually require compact power sources that can fit into arc-shaped structures while supporting sensors, Bluetooth communication, MCU control, LED indication, and standby operation.
With 18mAh capacity, this battery is mainly suitable for low-power wearable electronics requiring rechargeable energy for daily sensing, short wireless communication, data recording, and notification functions. The 3.8V high-voltage platform helps improve usable energy within a very small battery volume, making it suitable for compact smart ring designs.
LithoTop applies strict production control during cell selection, curvature forming, capacity testing, voltage inspection, internal resistance testing, thickness checking, aging verification, appearance inspection, and final quality control. These processes help ensure stable performance, reliable safety, and consistent production quality.
- Designed for Smart Rings
Suitable for compact ring-shaped wearable devices with limited internal battery space. - 3.8V High-Voltage Platform
Provides higher energy density compared with standard 3.7V lithium polymer battery designs. - 18mAh Miniature Capacity
Supports low-power sensors, Bluetooth communication, standby operation, and short activation cycles. - Compact 156825 Cell Design
Easy to integrate into smart rings, curved wearable sensors, and miniature electronic modules. - Stable Voltage Output
Helps support MCU circuits, biometric sensors, LED indicators, Bluetooth modules, and low-power control systems. - Lightweight Polymer Cell
Helps reduce total product weight for comfortable daily wearable applications. - Controlled Thickness and Shape
Battery thickness, sealing edge, tab direction, and cable outlet can be evaluated according to product structure.
- Smart rings
- Health monitoring rings
- Sleep tracking rings
- Fitness tracking rings
- Biometric wearable devices
- Wearable sensors
- Miniature Bluetooth devices
- Electronic tags
- Curved IoT sensor modules
- Compact rechargeable electronics
Smart Ring Curve Lipo Battery
| Model | Voltage(V) | Capacity(mAh) | Cell Size(T*W*L)mm | Shape | Polairty&Direction |
|---|---|---|---|---|---|
| 125034 | 3.7 | 14 | 1.25*5.1*34 | Curve | CD |
| 3.8 | 16 | Curve | |||
| 125625 | 3.7 | 10 | 1.25*5.6*25 | Curve | CD |
| 3.8 | 12 | Curve | |||
| 125628 | 3.7 | 12 | 1.25*5.6*28 | Curve | CD |
| 3.8 | 14 | Curve | |||
| 125634 | 3.7 | 15 | 1.25*5.6*34 | Curve | CD |
| 3.8 | 17 | Curve | |||
| 126825126825 3.8V 15mAh Curved LiPo Battery | 3.7 | 13 | 1.25*6.9*25 | Curve | ABCD |
| 3.8 | 15 | Curve | |||
| 120732 | 3.7 | 17 | 1.25*7.1*31 | Curve | ABCD |
| 3.8 | 19 | Curve | |||
| 155034 | 3.7 | 16 | 1.52*5.1*34 | Curve | CD |
| 3.8 | 18 | Curve | |||
| 155625 | 3.7 | 12 | 1.52*5.6*25 | Curve | CD |
| 3.8 | 14 | Curve | |||
| 155628 | 3.7 | 14 | 1.52*5.6*28 | Curve | CD |
| 3.8 | 16 | Curve | |||
| 155634 | 3.7 | 18 | 1.52*5.6*34 | Curve | CD |
| 3.8 | 20 | Curve | |||
| 156825156825 3.8V 18mAh Smart Ring Battery | 3.7 | 16 | 1.52*6.9*25 | Curve | ABCD |
| 3.8 | 18 | Curve | |||
| 150720 | 3.7 | 12 | 1.52*6.8*20.5 | Curve | ABCD |
| 3.8 | 13 | Curve | |||
| 150732 | 3.7 | 20 | 1.52*7.1*31 | Curve | ABCD |
| 3.8 | 22 | Curve | |||
| 160620160620 3.8V 12mAh Curved Polymer Battery | 3.7 | 11 | 1.6*6*20 | Curve | ABCD |
| 3.8 | 12 | Curve | |||
| 160625160625 3.8V 17mAh Curved Lithium Battery | 3.7 | 15 | 1.6*6*25 | Curve | ABCD |
| 3.8 | 17 | Curve | |||
| 160630160630 3.8V 18mAh Curved Batteries | 3.7 | 18 | 1.6*6*30 | Curve | ABCD |
| 3.8 | 21 | Curve | |||
| 160635 | 3.7 | 25 | 1.6*6*35 | Curve | D |
| 3.8 | 28 | Curve | |||
| 185625 | 3.7 | 17 | 1.8*5.6*25 | Curve | CD |
| 3.8 | 20 | Curve | |||
| 185628 | 3.7 | 19 | 1.8*5.6*28 | Curve | CD |
| 3.8 | 22 | Curve | |||
| 185634 | 3.7 | 23 | 1.8*5.6*34 | Curve | CD |
| 3.8 | 26 | Curve | |||
| 186825 | 3.7 | 22 | 1.8*7*25 | Curve | CD |
| 3.8 | 24 | Curve | |||
| 180732 | 3.7 | 30 | 1.8*7*31 | Curve | CD |
| 3.8 | 34 | Curve | |||
| 210630 | 3.7 | 30 | 2.1*6*30 | Curve | D |
| 3.8 | 33 | Curve | |||
| 210635 | 3.7 | 35 | 2.1*6*35 | Curve | C |
| 3.8 | 38 | Curve |
*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 – Health Tracking Smart Ring Project from Finland
A Finnish wearable technology company was developing a smart ring for daily health tracking, sleep monitoring, and activity recording. The product needed to remain slim, lightweight, and comfortable while powering a biometric sensor, MCU, LED indicator, memory module, and short Bluetooth data transmission. The customer’s previous battery option was difficult to integrate because the internal ring structure left very limited space for a flat battery.
The customer contacted LithoTop because they needed a miniature rechargeable battery designed specifically for smart ring applications. LithoTop reviewed the ring’s internal cavity, battery placement, standby current, sensor sampling interval, Bluetooth transmission current peak, charging method, and target wearing time.
After evaluation, LithoTop recommended the 156825 3.8V 18mAh Smart Ring Battery. Our engineering team judged that the 18mAh capacity was suitable for the customer’s low-power operating profile, while the 3.8V high-voltage platform helped improve usable energy within a very compact battery volume.
During sample development, LithoTop optimized the battery shape, tab direction, insulation method, cable outlet, and packaging method to reduce assembly stress inside the smart ring housing. Sample testing included capacity verification, standby simulation, Bluetooth pulse testing, sensor operation testing, charging compatibility checking, and installation fit validation.
Before mass production preparation, both teams confirmed samples, battery dimensions, thickness tolerance, charging requirements, labeling details, packaging method, and inspection standards. The final battery solution helped the customer improve internal space utilization while maintaining a comfortable ring design. For the customer, this reduced mechanical redesign pressure and supported faster prototype validation.
02 – Gesture Control Ring Project from Japan
A Japanese electronics company was developing a gesture control ring for smart home interaction and wearable remote control. The ring needed to power a motion sensor, low-power processor, Bluetooth module, LED indicator, and standby circuit. The main challenge was balancing small size, reliable pulse output, and comfortable wearing experience.
The customer approached LithoTop after testing several small batteries that were either too thick or unable to maintain stable voltage during Bluetooth transmission. They needed a battery manufacturer that could evaluate both electrical performance and mechanical integration for a ring-shaped product.
LithoTop analyzed the gesture ring’s standby current, motion detection current, wireless transmission peak, charging circuit, enclosure structure, and assembly process. Based on this evaluation, LithoTop recommended the 156825 3.8V 18mAh smart ring battery as a compact rechargeable power source.
During prototype development, LithoTop adjusted the insulation design to match the customer’s compact ring structure. Sample batteries were tested through gesture operation simulation, wireless pulse testing, voltage stability checking, charge-discharge cycling, storage testing, and installation fit verification.
Before production approval, the customer confirmed sample performance, battery thickness, packaging method, and incoming inspection standard. The final battery solution helped the gesture control ring maintain stable operation during wireless commands while keeping the device small and lightweight. For the customer, this improved user comfort, reduced battery-related instability, and supported smoother wearable product development.
Why Choose LithoTop for 156825 Smart Ring Battery Solutions?
Factory Support
Smart ring batteries require more than small capacity and compact size. Because the device space is extremely limited, battery development must consider thickness, curvature, sealing reliability, tab position, voltage consistency, internal resistance, charging compatibility, and mechanical stress during assembly.
LithoTop supports customers from early sample evaluation to mass production with professional engineering support and strict quality inspection. Our team can help evaluate smart ring structure, battery cavity, charging method, standby current, wireless transmission peak, sensor load, and final assembly requirements before confirming the battery solution.
More Customer Cooperation Cases
Powering leading batteries across wearables, medical devices, IoT, and consumer electronics in 30+ countries..
Smart Health Ring
A wearable health company needed a curved LiPo battery with narrow width for a compact smart ring. LithoTop developed a customized arc-shaped battery that maximized internal space while supporting continuous health and sleep monitoring.
Smart Fitness Ring
A fitness technology company required a small curved battery with reliable runtime for its next-generation smart ring. LithoTop engineered a custom LiPo solution with precise dimensions, high energy density, and stable performance.
Smart Payment Ring
A smart wearable developer needed an ultra-compact arc-shaped battery for a connected payment ring. LithoTop provided a customized curved LiPo battery designed to fit the circular structure while supporting wireless connectivity and daily use.
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.
LithoTop is a professional lithium battery manufacturer with production experience in custom battery development and assembly. We provide direct factory support, engineering assistance, quality control, and customized battery solutions for global customers. We wecome you to visit our factory.
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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.
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