3.7V 100mAh U252128 Ultra-Thin U-Shaped LiPo Battery for Wearable Devices

  • Model: U252128
  • Voltage: 3.7V
  • Capacity: 100mAh
  • Size: 28 × 21 × 2.5mm

U252128 Ultra-Thin U-Shaped LiPo Battery

Ultra-thin 3.7V U-shaped lithium polymer battery designed for compact wearable and portable electronics, offering high energy density, stable performance, and efficient space utilization.

3.7V / 100mAh
U-Shaped Design
Ultra-Thin Battery
High Energy Density

Product Overview

The U252128 is an ultra-thin U-shaped lithium polymer battery engineered for space-constrained electronic devices requiring flexible structural integration.
Its unique geometry allows installation in devices with irregular internal layouts, maximizing available space utilization.

With stable output performance, low self-discharge, and long cycle life, it is suitable for compact consumer and wearable electronics.

Technical Specifications

ItemSpecification
ModelU252128
Nominal Voltage3.7V
Capacity100mAh
Dimensions28 × 21 × 2.5mm
Internal Resistance≤300mΩ
Charge Cut-off Voltage4.2V
Discharge Cut-off Voltage3.0V
Standard Charge Current50mA
Max Charge Current100mA
Standard Discharge Current50mA
Max Discharge Current100mA
Operating TemperatureCharge: 0°C ~ 45°C / Discharge: -20°C ~ 60°C
Cycle Life≥300 cycles (0.2C charge/discharge, ≥75% retention)

Key Features

Ultra-Thin Design

Engineered for compact devices with strict space limitations.

U-Shaped Structure

Optimized for irregular internal device layouts.

High Energy Efficiency

Maximizes energy utilization in limited space.

Stable Performance

Reliable output for continuous low-power applications.

Low Self-Discharge

Maintains capacity during long-term storage.

Applications

  • Wearable Devices
  • Two-Way Radios (Walkie Talkies)
  • MP3 / Portable Audio Devices
  • PDA / Handheld Electronics
  • Other Compact Electronic Devices

OEM / ODM Custom Battery Solutions

We support customized ultra-thin U-shaped lithium polymer batteries for space-constrained devices, including size, capacity, and structural optimization for embedded applications.