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3.7V 380mAh 402050 Wide-Temperature Polymer Lithium Battery

The 402050 3.7V 380mAh polymer lithium battery is a compact, high-stability Li-ion pouch cell designed for wide-temperature applications from 0℃ to 85℃. With a slim 4.0×20×50mm structure, it is ideal for space-limited electronic devices requiring reliable and continuous power supply. Utilizing high-quality polymer lithium-ion materials and optimized electrolyte formulation, the battery delivers stable discharge performance and low internal resistance, ensuring efficient energy output and extended cycle life. It supports consistent operation even under elevated temperature conditions up to 85℃. This model is widely used in Bluetooth earphones, smart remote controllers, intelligent toys, portable medical devices, and other compact consumer electronics. Customized protection circuit modules (PCM) and connectors are available upon request to meet different application requirements.
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PKCELL
Features & Benefits

Product Details

  • Temperature Range: 0℃ to 85℃
    Wide operating c: 0℃ to 85℃
  • Feacture
    Ultra-thin pouch design, lightweight and compact
  • Stable voltage platform
    Stable voltage platform with low internal resistance
  • Longlife
    Long cycle life and high safety performance
  • Customizable
    Customizable PCM, NTC, and wire harness options
  • High energy
    High energy density for extended runtime

Tech Specs

  • Cell Model
    402050
  • Nominal Voltage
    3.7V
  • Nominal Capacity
    380mAh
  • Charging Voltage
    4.2V
  • Standard Charging Current
    ≤0.5C (190mA)
  • Max Charging Current
    1C (380mA)
  • Standard Discharge Current
    ≤0.5C
  • Max Continuous Discharge Current
    1C
  • Discharge Cut-off Voltage
    3.0V
  • Operating Temperature
    0℃～85℃
  • Storage Temperature
    -20℃～45℃
  • Internal Resistance
    ≤150mΩ

Pkcell - Personalizado
Especialista em soluções de baterias

Pkcell, established in 1998, is a professional Chinese battery manufacturer specializing in reliable and innovative power solutions. With a modern 28,000㎡ manufacturing facility and a strong R&D team of over 50 engineers, we deliver high-quality batteries to customers in more than 100 countries worldwide.

We focus on wide temperature and low temperature battery customization, providing stable and long-lasting power solutions designed to operate in extreme environments. Our batteries perform reliably under sub-zero and high-temperature conditions, making them ideal for medical devices, consumer electronics, industrial equipment, IoT systems and outdoor applications. Pkcell is committed to quality, safety and flexible OEM/ODM services to meet diverse customer needs.

  • 20
    +
    Anos de experiência
  • 28000
    ㎡
    Instalações
  • 50
    +
    Especialistas em P&D delicados
  • 100
    +
    Mais de 100 países exportados
About Pkcell