Shenzhen Uneme Technology Co.,Ltd
| Charge Voltage | 4.2V |
| Cycle Life | ≥500 Times |
| Battery Cell Dimensions | Max 2.8*20.0*28.0mm |
| Max Charge and Discharge Current | 1.0C/140mA |
| Battery Pack Dimensions | Max 3.5*20.0*30.0mm |
| Nominal Capacity | 140mAh |
| Energy | 0.518Wh |
| Nominal Voltage | 3.7V |
| Battery Type | LiPo Battery |
| Payment Terms | T/T,WorldFirst,Payoneer,PingPong,Paypal,Alipay,Western Union,... |
| Supply Ability | 200,000 Pieces Per Day |
| Delivery Time | 7-35 days |
| Packaging Details | Inner Tray + Inner Box + Outer Carton |
| Warranty | 1 Year |
| Model Number | UNM 282028 |
| Certification | UN38.3, MSDS, CE, CB, IEC62133, PSE, KC, UL1642... |
| Place of Origin | Guangdong, China |
| Brand Name | UNEMETECH |
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Product Specification
| Charge Voltage | 4.2V | Cycle Life | ≥500 Times |
| Battery Cell Dimensions | Max 2.8*20.0*28.0mm | Max Charge and Discharge Current | 1.0C/140mA |
| Battery Pack Dimensions | Max 3.5*20.0*30.0mm | Nominal Capacity | 140mAh |
| Energy | 0.518Wh | Nominal Voltage | 3.7V |
| Battery Type | LiPo Battery | Payment Terms | T/T,WorldFirst,Payoneer,PingPong,Paypal,Alipay,Western Union,... |
| Supply Ability | 200,000 Pieces Per Day | Delivery Time | 7-35 days |
| Packaging Details | Inner Tray + Inner Box + Outer Carton | Warranty | 1 Year |
| Model Number | UNM 282028 | Certification | UN38.3, MSDS, CE, CB, IEC62133, PSE, KC, UL1642... |
| Place of Origin | Guangdong, China | Brand Name | UNEMETECH |
| High Light | wearable rechargeable battery ，wearable device battery | ||
The 282028 low self-discharge LiPo Battery operates at 3.7V with a capacity of 140mAh, making it an excellent choice for wearable devices. This lithium polymer battery is designed to maintain its charge over extended periods, ensuring reliable performance for applications like fitness trackers, smartwatches, and health monitors. Its compact size allows for easy integration into sleek and lightweight designs, enhancing user comfort. The low self-discharge feature means less frequent charging is required, which is ideal for wearables that need to operate consistently. Overall, the 282028 LiPo battery offers a dependable energy solution for modern wearable technology.
| Battery Type | LiPo Battery |
| Model Number | UNM 282028 |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 150mAh |
| Cell Energy | 0.518Wh |
| Cell Chemistry | LiCoO₂ / NCM (Customizable) |
| Cell Dimensions (Max) | 2.8 × 20.0 × 28.0 mm |
| Pack Dimensions (Max) | 3.5 × 20.0 × 30.0 mm |
| Weight | Approx. 4.0g |
| Battery Pack Internal Impedance | ≤ 480 mΩ |
| Shipment Voltage | 3.85–4.0V (Adjustable upon request) |
| Max Charge Voltage | 4.2V |
| Standard Charge Current | 0.2C (28mA) to 4.2V, CCCV Mode |
| Max Charge Current | 1.0C (140mA) | Customizable |
| Discharge Cut-off Voltage | 3.0V |
| Standard Discharge Current | 0.2C (28mA) |
| Max Continuous Discharge Current | 1.0C (140mA) | Customizable |
| Operating Temperature | Charge: 0–45 °C | Discharge: -20–60 °C |
| T: 2.8mm Max( without 3M adhesive thickness ) | W: 20.0mm Max |
| T1: 3.5mm Max | H: 30.0mm Max |
The 282028 140mAh 3.7V Lithium Polymer Battery is designed for compact electronic devices that require reliable power, lightweight construction, and extended standby performance. Its low self-discharge characteristics help maintain battery capacity during storage and infrequent use, making it ideal for portable and wearable applications.
Typical uses include: Smart watches and wearable devices, Fitness trackers and health monitoring equipment, Bluetooth headsets and wireless audio products, Smart rings and compact IoT devices, GPS tracking devices, Medical monitoring instruments, Electronic badges and ID devices, Portable sensors and data loggers, Smart glasses and AR wearable products, Miniature consumer electronics and custom electronic projects..
Custom configurations, including PCM/BMS protection circuits, connectors, and cable options, are available to ensure safe integration into your specific product requirements.
All UNEMETECH lithium polymer batteries undergo strict quality control and comply with international safety & transportation standards, ensuring safe and reliable performance worldwide.
Depending on project requirements and target market regulations, we can provide certification documents such as CB, IEC 62133, UN38.3, MSDS, KC, PSE, BSMI, UL, RCM, CE, REACH, and RoHs 2.0 test reports, and other compliance documentation as required.
“The 282028 3.7V 140mAh LiPo battery has been an excellent choice for our wearable device. Its compact size, low self-discharge rate, and stable performance help extend standby time while ensuring reliable operation. The battery quality and consistency have exceeded our expectations.”
— Project Manager, GPS Tracker Device Manufacturer
UNEMETECH provides customized LiPo Battery solutions for wearable devices, Bluetooth products, portable electronics, IoT equipment, and other battery-powered applications. Optional PCM/BMS protection circuits, connectors, wire lengths, labels, and battery pack assemblies can be configured according to your project requirements.
Whether you require prototype samples or volume production, our engineering team can support your battery customization needs with reliable manufacturing and technical assistance.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Importer,Exporter,Seller,Other
Year Established:
2021
Total Annual:
5000-6500
Employee Number:
800~1000
Ecer Certification：
Verified Supplier
Shenzhen Uneme Technology Co.,Ltd. located in Shenzhen Guangdong China, is an innovative enterprise which mainly focused on the development, manufacturing and marketing of Lithium Polymer Batteries, Lithium ion Batteries, Ni-MH Batteries and UAV Batteries for consumer, industrial, medical and automo... Shenzhen Uneme Technology Co.,Ltd. located in Shenzhen Guangdong China, is an innovative enterprise which mainly focused on the development, manufacturing and marketing of Lithium Polymer Batteries, Lithium ion Batteries, Ni-MH Batteries and UAV Batteries for consumer, industrial, medical and automo...
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