3.7V 500mAh 651566 lithium polymer battery for Smart wearables

  • Model: LNC651566
  • Voltage: 3.7V
  • Capacity: 500mAh
  • Size:  66 × 15 × 6.5mm

LNC651566 High-Performance LiPo Battery

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

3.7V / 500mAh
66×15×6.5mm
Stable Performance
Low Self-Discharge

Product Overview

The LNC651566 is a high-performance 3.7V lithium polymer ring battery designed for wearable and body-worn electronic devices. Featuring a 500mAh capacity and ring-shaped form factor, it is engineered to deliver stable power output in compact, curved-space installations.

With high energy density, low self-discharge, and long cycle life performance, this battery is well-suited for continuous operation in smart wearable systems where reliability and space efficiency are critical.

Technical Specifications

ItemSpecification
ModelLNC651566
Nominal Voltage3.7V
Capacity500mAh
Dimensions66 × 15 × 6.5mm
Initial Internal Resistance<60mΩ
Factory Voltage3.8V – 4.0V
Charge Cut-off Voltage4.35V
Discharge Cut-off Voltage3.0V
Standard Charge Current500mA
Max Charge Current1000mA
Standard Discharge Current1500mA
Max Discharge Current2000mA
Operating TemperatureCharge: 5°C~35°C / Discharge: -20°C~45°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

  • Smart wearables
  • Children safety tracking bracelets
  • Sports smart bands and watches
  • Medical monitoring devices
  • IoT and compact tracking systems

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.