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Wearable 125625 12mAh Ring Battery
The 125625 3.8V 12mAh Ring Battery is designed for smart rings and other ultra-compact wearable electronic devices that require thin structure, lightweight design, stable voltage output, and efficient use of limited internal space. With a 3.8V high-voltage platform and 12mAh capacity, this battery is suitable for smart rings, biometric wearables, gesture control devices, electronic jewelry, compact sensors, and miniature rechargeable electronics.
As a professional lithium polymer battery manufacturer, LithoTop provides customized ring battery solutions, including battery size optimization, label design, packaging, and OEM/ODM battery assembly according to customer product requirements.
Additional information
| Product Type | Curved Lipo battery |
|---|---|
| Model number | 125625 |
| Voltage (Nominal) | 3.8V |
| Capacity (Nominal) | 12mAh |
| Dimensions | 1.2±0.2*5.6±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 125625 3.8V 12mAh ring battery is engineered for wearable products where battery space is extremely limited. Smart rings and miniature wearable electronics often need a very small rechargeable battery that can support sensors, Bluetooth communication, MCU control, LED indicators, short vibration feedback, and standby operation without increasing product thickness.
With 12mAh capacity, this battery is mainly suitable for low-power wearable systems requiring rechargeable power for periodic sensing, short wireless transmission, standby operation, indicator functions, and compact electronic control. The 3.8V high-voltage platform helps provide improved usable energy within a very small battery volume.
LithoTop applies strict production control during cell selection, 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 mass production quality.
- Designed for Ring-Type Wearables
Suitable for smart rings, electronic jewelry, miniature wearable controllers, and compact sensor devices. - 3.8V High-Voltage Platform
Provides higher energy density compared with standard 3.7V miniature lithium polymer battery designs. - Stable Voltage Output
Helps support MCU circuits, biometric sensors, Bluetooth modules, LED indicators, and low-power electronic systems. - Lightweight Polymer Cell
Helps reduce total product weight for comfortable daily wearable applications. - Strict Thickness and Quality Control
Each battery is checked for voltage, capacity, internal resistance, thickness, appearance, and production consistency. - Custom Battery Assembly
Supports customized wires, PCM protection, cable direction, labels, shrink wrap, and packaging according to project requirements.
- Smart rings
- Biometric tracking rings
- Gesture control rings
- Electronic jewelry
- Miniature wearable sensors
- Bluetooth wearable modules
- Smart authentication rings
- Compact notification wearables
- Miniature IoT devices
- Custom rechargeable wearable 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 | |||
| 125625Wearable 125625 12mAh Ring Battery | 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 | |||
| 155028CE 155028 14mAh Wearable Battery | 3.7 | 12 | 1.52*5.1*28 | Curve | CD |
| 3.8 | 14 | ||||
| 155034 | 3.7 | 16 | 1.52*5.1*34 | Curve | CD |
| 3.8 | 18 | Curve | |||
| 155625Small 155625 3.8V 14mAh Ring Battery | 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 – Switzerland Smart Authentication Ring Project
A Swiss digital security company was developing a rechargeable smart authentication ring for secure computer login and identity verification. The ring needed to power a secure authentication chip, capacitive touch circuit, LED indicator, and short Bluetooth communication function. Because the product was designed for daily office use, the ring needed to remain slim, lightweight, and comfortable while still providing reliable rechargeable performance.
The customer contacted LithoTop after their first battery option created too much thickness near the PCB and interfered with the internal antenna layout. They needed a smaller rechargeable battery that could fit into the remaining cavity without affecting the ring’s electronic structure.
LithoTop reviewed the ring’s PCB dimensions, antenna location, authentication cycle, standby current, Bluetooth peak load, LED activation time, charging method, and internal assembly tolerance. After evaluation, LithoTop recommended the 125625 3.8V 12mAh Ring Battery. The 12mAh capacity matched the low-duty-cycle application, while the 3.8V platform helped provide improved usable energy in the restricted internal space.
During sample development, LithoTop optimized the wire outlet direction, insulation layer, cable length, and battery placement according to the customer’s PCB and antenna structure. Sample batteries were tested through repeated authentication cycles, Bluetooth communication pulses, LED activation, standby evaluation, charging compatibility checking, thickness verification, and enclosure fit validation.
Before pilot production, both teams confirmed golden samples, battery dimensions, wire direction, charging requirements, packaging method, and incoming inspection standards. The final solution allowed the customer to maintain the original ring profile without redesigning the authentication electronics. For the customer, this reduced mechanical changes, improved assembly efficiency, and supported a smoother product validation process.
02 – Singapore Smart Fitness Counter Ring Project
A Singapore sports technology startup was developing a compact fitness counter ring used for gym training and repetitive exercise tracking. The device needed to detect finger movement through a miniature motion sensor, count training repetitions, store basic activity data, and synchronize results with a smartphone after each workout session.
The customer’s early prototype used a small rechargeable battery that could fit the enclosure, but the battery occupied too much internal width and left insufficient space for the motion sensor and charging contacts. They needed a smaller battery solution that could support short training sessions while giving the mechanical team more freedom to reorganize the PCB and sensor layout.
LithoTop analyzed the sensor sampling current, MCU operating cycle, data storage load, Bluetooth synchronization peak, charging method, ring cavity, and expected workout duration. Based on this analysis, LithoTop recommended the 125625 3.8V 12mAh ring battery as a compact rechargeable power solution.
During prototype development, LithoTop adjusted the cable outlet position, wire length, insulation structure, and battery packaging method to simplify assembly inside the small ring housing. Sample batteries were tested through motion counting simulation, repeated wake-up cycles, Bluetooth synchronization, standby testing, charge-discharge cycling, voltage stability checking, and mechanical fit verification.
The customer then completed gym-based prototype trials and confirmed that the smaller battery structure created enough space to reposition the sensor and improve ring balance. Before production approval, both teams finalized the approved sample, cable configuration, packaging requirements, and quality inspection standard.
The final battery solution helped the customer maintain a compact ring design while supporting reliable workout tracking and wireless synchronization. For the customer, this improved internal space utilization, simplified mechanical integration, and reduced the need for further enclosure redesign.
Why Choose LithoTop for 125625 Ring Battery Solutions?
Factory Support
Ring batteries require precise control over battery size, thickness, capacity consistency, voltage stability, internal resistance, sealing reliability, tab direction, cable position, and charging compatibility. In miniature wearable products, even a small difference in battery dimensions can affect PCB placement, enclosure assembly, charging coil position, and overall wearing comfort.
LithoTop supports customers from prototype development to mass production with professional engineering support and strict quality control. Our team can help evaluate ring cavity size, operating current, sensor load, Bluetooth transmission peak, charging method and final assembly conditions 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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