China factories

Chat Now Send Email
China factory - Shenzhen Resky Electronics Co., Ltd.

Shenzhen Resky Electronics Co., Ltd.

  • China,Shenzhen ,Guangdong
  • Verified Supplier
  1. Home
  2. Products
  3. About Us
  4. Contact Us

Leave a Message

we will call you back quickly!

Submit Requirement
China Flat Lithium Battery Cell 502040 3.7v 400mAh Rechargeable Li-ion Polymer Battery
China Flat Lithium Battery Cell 502040 3.7v 400mAh Rechargeable Li-ion Polymer Battery

  1. China Flat Lithium Battery Cell 502040 3.7v 400mAh Rechargeable Li-ion Polymer Battery
  2. China Flat Lithium Battery Cell 502040 3.7v 400mAh Rechargeable Li-ion Polymer Battery

Flat Lithium Battery Cell 502040 3.7v 400mAh Rechargeable Li-ion Polymer Battery

  1. MOQ: 100pcs
  2. Price: Negotiable
  3. Get Latest Price
Payment Terms T/T,Western Union
Supply Ability 50000pcs/day
Delivery Time 7-10days
Packaging Details Paper box
Model NO. LP502040
Nominal Capacity 400mAh
Weight 8g
MOQ 10PCS
Cycle Life 500cycles
Warranty 12months
Shipping UPS, DHL, FedEx, TNT, by Air, by Sea, Special Line
Lead Time 3-7workdays
Connector Jst, Molex....
Specification 5*20*40mm
Brand Name RESKY
Model Number LP502040
Certification MSDS, Un38.3,CE, ROHS, REACH, IEC62133 ect
Place of Origin China

View Detail Information

Inquiry by Email Get Latest Price
Chat online Now Ask for best deal
  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T,Western Union Supply Ability 50000pcs/day
Delivery Time 7-10days Packaging Details Paper box
Model NO. LP502040 Nominal Capacity 400mAh
Weight 8g MOQ 10PCS
Cycle Life 500cycles Warranty 12months
Shipping UPS, DHL, FedEx, TNT, by Air, by Sea, Special Line Lead Time 3-7workdays
Connector Jst, Molex.... Specification 5*20*40mm
Brand Name RESKY Model Number LP502040
Certification MSDS, Un38.3,CE, ROHS, REACH, IEC62133 ect Place of Origin China
High Light 502040 lithium polymer battery3.7v rechargeable battery cell400mAh flat li-ion battery
Flat Lithium Battery Cell 502040 3.7v 400mAh Rechargeable Li-ion Polymer Battery Packs
High-performance 3.7V 400mAh 1.48Wh rechargeable Li-polymer battery cell designed for compact electronic devices requiring reliable power in limited space.
Technical Specifications
Parameter Specification
Battery Type 3.7V 400mAh Li-polymer
Charge Voltage 4.2V
Nominal Voltage 3.7V
Nominal Capacity 400mAh (0.2C Discharge)
Charge Current Standard: 0.5C (200mA)
Rapid: 1.0C (400mA)
Charging Method 0.5C CC to 4.2V, then CV until current ≤0.05C
Charging Time Standard: ~2.75 hours
Rapid: ~2 hours
Max Charge Current 1.0C (400mA)
Max Discharge Current 1.0C (400mA)
Discharge Cut-off Voltage 2.75V ±0.25V (0.2C)
Operating Temperature Charging: 0°C to 45°C
Discharging: 0°C to 45°C
Storage: -10°C to 45°C
Dimensions Length: 40±2mm
Width: 20±0.5mm
Thickness: 5±0.2mm
Cycle Life ≥500 cycles

Advantages:


Miniaturization and Lightweighting: Lightweight and compact batteries are ideal for space- and weight-sensitive applications, such as smart wearable devices or portable electronics.


Design Flexibility: Can be manufactured in any shape and thickness, and is even flexible (maximum bending angle approximately 900 degrees), meeting the styling requirements of complex devices.


Enhanced Safety: The gel electrolyte reduces the risk of leakage and explosion; internal problems are typically indicated by bulging packaging, enhancing reliability.


Capacity and Voltage Advantages: Higher capacity for the same size compared to traditional lithium-ion batteries, and high voltage per cell contributes to improved system efficiency.


Environmental Adaptability: Wide operating temperature range (e.g., -40°C to 70°C), suitable for extreme environmental conditions.

Structural & Safety Features
  • Electrode System: NCM/NCA ternary cathode material with graphite anode
  • Packaging: Aluminum-plastic composite film soft-pack with flexibility (bending radius ≥5mm)
  • Electrolyte: Polymer gel electrolyte with superior thermal stability and no leakage risk
  • Safety Protection: Built-in PCM module for overcharge, over-discharge, overcurrent, and short circuit protection
  • Drop Test Certified: Withstands 1-meter drops onto concrete without fire or leakage
Primary Applications
Smart Wearables & Children's Products
  • Entry-level smart bracelets and watches (1-3 day battery life)
  • Children's phone watches, smart toy watches, GPS bracelets
  • Mini heart rate monitors, pedometers, cycling speed sensors
Medical & Health Equipment
  • Portable diagnostic devices: electronic thermometers, oximeters, blood pressure monitors
  • Rehabilitation aids: mini massagers, physiotherapy devices, hearing aids
IoT & Smart Home Devices
  • Low-power sensors: temperature/humidity, door/window, smoke detectors
  • Small smart home devices: smart door locks, mini cameras, wireless remotes
Product Images

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory
  • Business Type:

    Manufacturer,Distributor/Wholesaler

  • Year Established:

    2012

  • Total Annual:

    500000-1000000

  • Employee Number:

    20~50

  • Ecer Certification:

    Verified Supplier

Shenzhen Resky Electronics Co., Ltd is a company specialized in manufacturing, sales and marketing of rechargeable lithium battery and related battery packs.Our lithium battery cells and packs products are widely used in portable mobile devices such as Bluetooth headsets, MP3 players, PDAs, Digital ... Shenzhen Resky Electronics Co., Ltd is a company specialized in manufacturing, sales and marketing of rechargeable lithium battery and related battery packs.Our lithium battery cells and packs products are widely used in portable mobile devices such as Bluetooth headsets, MP3 players, PDAs, Digital ...

+ Read More

Get in touch with us

  • Reach Us
  • Shenzhen Resky Electronics Co., Ltd.
  • Room 1405-1, Building 3B, Huaqiang Idea Park, Guangming Street, Guangming District, Shenzhen, Guangdong Province,China
  • https://www.lithiumbatteriescell.com/

Leave a Message, we will call you back quickly!

Email

Check your email

Phone Number

Check your phone number

Requirement Details

Your message must be between 20-3,000 characters!

Submit Requirement