Custom LiPo Battery for Portable Pulse Oximeter
2024-06-10

3.8V 110mAh 441718 Ultra-Thin LiPo Battery for Smart Bracelet
A compact 3.8V 110mAh lithium polymer battery designed for smart bracelets, medical wearables, and other space-constrained wearable devices.
Customer Requirement
The customer required a compact rechargeable LiPo battery for a smart bracelet with limited internal space. The battery needed to provide 3.8V nominal voltage and 110mAh capacity while maintaining a lightweight and compact form factor suitable for wearable device integration.
Our Battery Solution
We provided a 441718 high-voltage lithium polymer battery with a nominal voltage of 3.8V and a nominal capacity of 110mAh. Its compact dimensions and lightweight construction make it suitable for smart bracelets and other space-constrained wearable devices. The battery can be configured with a PCM protection circuit and cable according to the customer's device requirements.
441718 Battery Specifications
| Battery Model | 441718 |
| Battery Type | High Voltage Lithium Polymer Battery |
| Nominal Voltage | 3.8V |
| Nominal Capacity | 110mAh |
| Typical Capacity | 120mAh |
| Energy | 0.418Wh |
| Cell Dimensions | 4.4 × 17.2 × 18.0 mm |
| Pack Dimensions | 4.5 × 17.2 × 20.0 mm |
| Weight | Approx. 3.0g |
| Maximum Charge Voltage | 4.35V |
| Max. Continuous Discharge Current | 1C / 110mA |
| Discharge Cut-off Voltage | 3.0V |
| Protection | PCM / Protection Circuit |
| Connector & Cable | Customized according to device requirements |
Testing & Validation
Charging Test
Charging performance was tested according to the specified charging requirements.
Discharge Test
Discharge performance was verified under the required operating conditions.
Dimension Verification
Battery dimensions and thickness were inspected to ensure proper integration into the wearable device.
Protection Test
The battery protection circuit was tested according to the required protection specifications.
Project Result
The 441718 lithium polymer battery provided a compact 3.8V / 110mAh power solution for the smart bracelet. With a cell size of 4.4 × 17.2 × 18.0 mm and a lightweight design of approximately 3.0g, the battery was suitable for integration into space-constrained wearable devices while providing stable rechargeable power.
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