542666 3.7V 1050mAh Rechargeable Lithium Polymer Battery For Beauty Devices
542666 3.7V 1050mAh Rechargeable Lithium Polymer Battery for Beauty Devices
The 542666 3.7V 1050mAh rechargeable lithium polymer battery is a reliable LiPo battery designed for beauty devices. It delivers stable output, high energy density, lightweight structure, and long cycle life for compact electronic applications.
Lithium Polymer Battery Key Features
Soft-pack lithium polymer batteries (LiPo), encapsulated in aluminum-plastic composite film, are widely used in modern consumer electronics due to their flexibility, safety, and high energy density.
Core Characteristics
1. Structural Flexibility: Aluminum-plastic film allows ultra-thin and custom-shaped battery designs.
2. Safety Performance: Soft-pack structure reduces explosion risk and improves safety under abnormal conditions.
3. High Energy Density: Provides long runtime with low self-discharge performance.
Core Advantages
1. Design Flexibility: Suitable for compact beauty devices and wearable electronics.
2. Lightweight Structure: Lower weight compared to metal-cased batteries with reliable sealing performance.
3. Long Cycle Life: Supports frequent charge and discharge cycles in daily use.
Note: External protection is recommended due to soft-pack structure.
542666 Lithium Polymer Battery Technical Parameters
Basic Parameters
| Specification | Details |
|---|---|
| Battery Type | Rechargeable Lithium Polymer Battery |
| Model Number | UNM 542666 |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 1050mAh |
| Energy | 3.885Wh |
| Cell Chemistry | LiCoO₂ / NCM (Customizable) |
| Cell Dimensions | 5.4 × 26.3 × 66.5 mm (Max) |
| Pack Dimensions | 5.5 × 26.5 × 68.0 mm (Max) |
| Weight | Approx. 17g |
| Internal Resistance | ≤ 180 mΩ |
| Shipment Voltage | 3.85–4.0V (Adjustable per request) |
Charge & Discharge Parameters
| Parameter | Details |
|---|---|
| Max Charge Voltage | 4.2V |
| Standard Charge Current | 0.2C (210mA) |
| Max Charge Current | 1.0C (1050mA) |
| Cut-off Voltage | 3.0V |
| Standard Discharge | 0.2C (210mA) |
| Max Discharge Current | 1.0C (1050mA) |
| Operating Temperature | Charge: 0 to 45℃ / Discharge: -20 to 60℃ |
Dimensions & Structure
| Battery Cell Dimensions: Max. 5.4 (T) × 26.3 (W) × 66.5 (H) mm |
Wire: Molex51021-2P / UL1571AWG26 / 60±3mm |
| Battery Pack Dimensions: Max. 5.5 (T) × 26.5 (W) × 68.0 (H) mm |
PCM: S-8261ABJMD-G3J-T2 + 8205A |
Typical Applications
This 542666 LiPo battery is designed for compact beauty devices requiring stable and lightweight power solutions.
Beauty Devices: Facial cleansing brushes, RF beauty devices, skin massagers, EMS tools, lifting devices.
Personal Care: Eye massagers, neck massagers, scalp care devices.
Medical Devices: Portable health monitoring and rehabilitation devices.
Wearables: Smart trackers and compact electronics.
OEM/ODM: Customized battery solutions with PCM/BMS and connector options.
Quality & Safety
All UNEMETECH lithium polymer batteries undergo strict quality control and comply with international safety and transportation standards.
“We’ve used UNEMETECH’s 542666 LiPo battery for our beauty device project. Stable performance and long cycle life solved our power issues. Technical support was fast and professional.”
— OEM Customer, Europe
Why Choose UNEMETECH
10+ years lithium battery manufacturing experience
Full in-house R&D and customization
Strict QC system (material → production → testing)
Competitive factory pricing with low MOQ
Global logistics support
Fast prototyping (3–15 days)
Full OEM/ODM customization
Contact UNEMETECH for datasheets, pricing, and OEM/ODM customization support.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.