3.7V 180mAh 451929 lithium polymer battery for Wireless earbuds

  • Model: LNC451929
  • Voltage: 3.7V
  • Capacity: 180mAh
  • Size: 29 × 19 × 4.5mm

LNC451929 High-Performance LiPo Battery

Compact 3.7V lithium polymer battery designed for space-efficient electronic devices, delivering stable performance, long cycle life, and low self-discharge characteristics.

3.7V / 180mAh
29×19×4.5mm
Stable Performance
Low Self-Discharge

Product Overview

The LNC451929 is a lithium polymer rechargeable battery engineered for compact electronic devices requiring stable power output and optimized space utilization.

With a 180mAh capacity and a 4.5mm ultra-compact profile, it is suitable for applications where both energy density and structural integration are critical.

Technical Specifications

 

ItemSpecification
ModelLNC451929
Nominal Voltage3.7V
Capacity180mAh
Dimensions29 × 19 × 4.5mm
Initial Internal Resistance185mΩ
Factory Voltage3.8V – 4.0V
Charge Cut-off Voltage4.35V
Discharge Cut-off Voltage3.0V
Standard Charge Current85mA
Max Charge Current170mA
Standard Discharge Current85mA
Max Discharge Current170mA
Operating TemperatureCharge: 0°C~55°C / Discharge: -10°C~60°C
Cycle Life≥500 cycles (0.2C charge/discharge, ≥75% retention)

Key Advantages of Polymer Flexible Battery

Long Cycle Life

Up to 500+ charge/discharge cycles under standard conditions.

High Energy Density

Provides strong energy output in a compact lightweight structure.

Low Internal Resistance

Polymer cells can achieve ultra-low resistance (down to 35mΩ in advanced designs), reducing energy loss.

Low Self-Discharge

Minimal capacity loss during long-term storage.

No Memory Effect

No need for full discharge before recharge.

Excellent Discharge Stability

Stable discharge curve with higher voltage platform due to gel polymer electrolyte.

Custom Shape Design

Supports fully customized geometries for OEM wearable integration.

Enhanced Safety

Pouch structure avoids explosion risk; swelling only under extreme conditions.

Applications

  • Portable Electronic Devices
  • Smart Devices
  • IoT Systems
  • Consumer Electronics
  • Compact Energy Storage Modules

OEM / ODM Custom Battery Solutions

We support full customization for wearable battery solutions including dimensions, capacity, shape, and discharge requirements for smart ring and micro-device applications.