Smart rings are becoming one of the fastest-growing segments in wearable technology. By integrating sensors, wireless communication, health monitoring, contactless payments, and AI-powered functions into an ultra-compact wearable form factor, smart rings provide users with convenient access to real-time data while maintaining comfort and portability.
As device sizes continue to shrink, battery technology plays a critical role in determining product performance, operating time, and overall user experience.
Common Battery Technologies Used in Smart Rings
1. Miniature LiPo Batteries
Most smart rings on the market utilize miniature lithium polymer batteries due to their compact size, lightweight design, and high energy density.
Typical Capacities:
- 10mAh
- 15mAh
- 20mAh
- 30mAh
Key Benefits:
- Extremely compact dimensions
- Lightweight construction
- Rechargeable design
- High energy density
2. Curved LiPo Batteries
Since smart rings feature circular structures, curved batteries are increasingly adopted to maximize internal space utilization.
Advantages:
- Better space utilization
- Higher capacity within limited volume
- Improved product design flexibility
3. Custom-Shaped Batteries
Premium smart ring manufacturers often use customized battery structures to optimize battery performance and device design.
Available Shapes:
- Arc-Shaped
- Semi-Circular
- Ring Segment
- Customized Geometry
Benefits:
- Maximum internal space utilization
- Reduced product thickness
- Enhanced wearing comfort
Challenges of Smart Ring Battery Design
Extremely Limited Internal Space
Smart rings offer one of the smallest battery installation spaces among wearable devices.
- Ultra-miniature dimensions
- Complex internal structures
- Strict space constraints
Lightweight & Comfortable Design
The battery must remain virtually unnoticed during daily wear.
- Ultra-lightweight batteries
- Compact structures
- Optimized weight distribution
Long Battery Life Expectations
Users expect several days of operation between charges.
- Continuous sensor monitoring
- Bluetooth communication
- Sleep tracking
- Health data collection
Safety & Reliability
Since smart rings are worn continuously on the body, safety and reliability are top priorities.
- Stable performance
- Low heat generation
- Reliable protection systems
Typical Battery Specifications for Smart Rings
| Parameter | Typical Range |
|---|---|
| Voltage | 3.7V – 3.85V |
| Capacity | 10mAh – 38mAh |
| Thickness | 1.25mm – 2.1mm |
| Battery Type | LiPo Battery |
| Shape | Curved / Custom |
| Cycle Life | 300–500 Cycles |
| Protection Circuit | No need |
Please feel free to contact us for more information and customized battery solutions for your project.
Curved ring batteries are specifically designed to follow the circular structure of smart rings, allowing manufacturers to maximize available internal space while maintaining a compact and comfortable design.
Unlike traditional rectangular batteries, curved batteries can be integrated along the inner circumference of the ring, improving space utilization and enabling higher battery capacity within the same device size.
Key Benefits:
- Optimized for circular smart ring structures
- Improved space utilization
- Higher battery capacity in limited volume
- Enhanced wearing comfort
- Custom radius and dimensions available
Suitable Applications:
- Health Monitoring Rings
- Sleep Tracking Rings
- Fitness Rings
- AI Smart Rings
- NFC Smart Rings
Curve Smart Ring Batteries List
| 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 | |||
| 126825 | 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 | |||
| 156825 | 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 | |||
| 160620 | 3.7 | 11 | 1.6*6*20 | Curve | ABCD |
| 3.8 | 13 | Curve | |||
| 160630 | 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 |
Curved ultra narrow batteries represent one of the most advanced battery solutions for next-generation smart rings. Combining an ultra-slim profile with a curved structure, these batteries are engineered for devices where every millimeter of space matters.
Designed to fit narrow ring frames and miniature wearable electronics, curved ultra narrow batteries provide excellent energy density while maintaining a lightweight and ergonomic design.
Key Features:
- Ultra narrow width design
- Custom curved and arc-shaped configurations
- High energy density for extended runtime
- Lightweight construction for maximum comfort
- Optimized for miniature wearable devices
- Custom capacity and dimensions available
Curve Narrow Lipo Batteries List
| Model | Nominal Voltage(V) | Capacity(mAh) | Charge Voltage(V) | Cut-off Voltage(V) | Cell size(T*W*L)mm | Shape |
|---|---|---|---|---|---|---|
| 140422 | 3.6 | 6.2 | 4.4 | 2.5 | 1.4*4.5*22 | Curve |
| 140428 | 3.6 | 9.4 | 4.4 | 2.5 | 1.4*4.5*28 | Curve |
| 140430 | 3.6 | 10.4 | 4.4 | 2.5 | 1.4*4.5*30 | Curve |
| 140432 | 3.6 | 11.5 | 4.4 | 2.5 | 1.4*4.5*32 | Curve |
Want a different Wearable batteries? Contact us now for your special needs.
