3.7V 500mAh Li-Polymer Battery AS702040

Power your portable electronics with our reliable Lithium Polymer Battery (LiPo), model AS702040. This 3.7V, 500mAh (1.85Wh) rechargeable battery pack is engineered for safety and longevity, featuring a built-in Protection Circuit Module (PCM) and an NTC Thermistor for real-time temperature monitoring. Its compact, lightweight design and standard wire leads make it an ideal power solution for a wide range of consumer and industrial devices.

Description

Model AS702040 – Slim LiPo Battery

Voltage: 3.7V | Capacity: 500mAh (1.85Wh) | Size: 43.0×20.5×4.1mm

AS702040 3.7V 500mAh Li-Polymer battery for wireless earbuds and fitness trackers

This 3.7V 500mAh Lithium Polymer Battery is a premium power source designed for modern, space-constrained applications. Housed in a durable silver pouch, the battery utilizes advanced LiPo technology to deliver a high energy density in a slim and lightweight form factor.

The key to its reliability is the integrated safety system. The internal Protection Circuit safeguards the battery from common issues like over-charging, over-discharging, and short circuits, significantly extending its lifecycle. Furthermore, the inclusion of a Thermistor (NTC) allows the host device to monitor the battery’s temperature during operation, preventing overheating and ensuring stable performance under various loads.

Equipped with UL-certified wires (UL3302 AWG28) and color-coded leads (red, black, white), this battery pack is ready for easy integration into your electronic products. Whether you are designing a new gadget or replacing an old battery, this model offers a perfect balance of capacity, safety, and convenience.

Compact AS702040 polymer battery powering portable audio devices and small speakers

Technical Specifications

Battery Type Lithium Ion Polymer Battery
Part Number AS702040
Voltage @ Capacity 3.7V @ 500mAh (1.85Wh)
Protection Circuit Yes (PCM Included)
Thermistor (NTC) Yes
Wires UL3302 AWG28 50mm
Connector /
Dimensions (L x W x T) 43.0mm x 20.5mm x 4.1mm
Charge Current 0.2C to 0.5C (Standard Charge)
Discharge Current 0.5C to 1.0C (Continuous)
Storage Temperature -20°C to +45°C

AS702040 lithium polymer battery for small IoT sensors, GPS trackers, and smart tags

Core Advantages


  • Enhanced Safety: Built-in PCM protects against over-voltage, under-voltage and short circuits for safe battery and device operation.

  • Intelligent Temperature Monitoring: Integrated NTC thermistor realizes real-time heat detection and optimizes charging and discharging performance.

  • High Energy Density: Compact lightweight design delivers larger capacity, supporting streamlined product appearance.

  • Reliable & Certified Components: Premium UL certified wire ensures excellent insulation and stable electric connection.

  • Ready-to-Use Design: Tinned wire ends facilitate easy soldering and quick product assembly.

Perfect For Applications

Consumer Electronics
Bluetooth headsets, portable speakers, media players, e-readers.
Smart Home Devices
Wireless sensors, smart locks, remote control devices.
Portable Gadgets
GPS trackers, game consoles, digital cameras.
DIY & Hobbyist Projects
Arduino, Raspberry Pi and lightweight rechargeable power projects.

AS702040 3.7V 500mAh rechargeable battery for RC toys, drones, and hobby projects

Customization Services (OEM/ODM)

We understand that every product has unique power requirements. Our custom battery solutions are designed to help you get the perfect fit. We offer a variety of customization options, including:

  • Connectors: Equip with JST-PH2.0, JST-XH2.54, Molex and other customized connectors.
  • Wire Length & Type: Adjust wire length and specification to match internal structural layout.
  • Battery Capacity & Shape: Develop customized cells to meet specific voltage and capacity demands.
  • Branding & Labeling: Attach personalized logo, part number and safety warning labels.

Contact us today to discuss how we can tailor this Lithium Polymer Battery to power your next great product.

Reliable AS702040 polymer battery for compact medical wearables and portable monitors