3.7V 420mAh Compact Li-Polymer Battery AS802035

Reliable 3.7V 420mAh AS802035 Li-Polymer battery featuring an integrated protection circuit for enhanced safety. Ideal for small consumer electronics, medical devices, and IoT gadgets. Supports OEM/ODM customization for wires, connectors, and packaging to fit your specific application.

Description

Model AS802035 – Compact LiPo Battery Pack with PCM

Voltage: 3.7V | Capacity: 420mAh (1.554Wh) | Size: 38×20.5×8.1mm

 Compact Li-Polymer battery for small consumer electronics   Engineered for safety and performance, this AS802035 Lithium Ion Polymer Battery delivers dependable power in a compact form factor. With a built-in protection circuit, this battery ensures stable operation and safeguards against overcharge, over-discharge and short circuits — making it ideal for sensitive electronics.

Its slim 8.1mm profile and lightweight design allow seamless integration into space-constrained devices, while the high-quality UL3239 28AWG wires (30mm length) provide durable, low-resistance connectivity. Whether you’re powering a wearable health monitor, a wireless sensor or a handheld gadget, the AS802035 offers consistent energy delivery and long cycle life.

Small and lightweight Li-Polymer batteries are ideal for powering compact consumer electronics like wireless earbuds and Bluetooth devices.

Technical Specifications

Battery Type Lithium Ion Polymer Battery
Part Number AS802035
Voltage @ Capacity 3.7V @ 420mAh (1.554Wh)
Protection Circuit Yes (PCM Included)
Thermistor (NTC) /
Wires UL3239 28AWG 30mm
Connector /
Dimensions (L x W x T) 38mm x 20.5mm x 8.1mm
Charge Current 0.2C to 0.5C (Standard Charge)
Discharge Current 0.5C to 1.0C (Continuous)
Storage Temperature -20°C to +45°C

Safe and stable Li-Polymer batteries meet the power needs of smart wearables, fitness trackers, and health monitoring devices.

Core Advantages


  • Built-in Safety: Integrated protection circuit ensures safe, worry-free operation for sensitive electronics.

  • Compact & Lightweight: Slim 8.1mm profile perfect for portable devices where space is at a premium.

  • Highly Customizable: Tailor wire length, connector type or add custom PCBs to match your product requirements.

  • Wide Compatibility: Suitable for consumer electronics, IoT devices, medical equipment and more.

Perfect For Applications

Smart Wearables
Fitness trackers, smart rings and health monitors.
Audio Devices
Wireless earbuds, Bluetooth headsets and audio accessories.
Medical Devices
Portable medical sensors and diagnostic monitors.
IoT & Sensors
IoT gateways and environmental monitoring sensors.
Toys & Gadgets
Mini drones, RC toys and small electronic gadgets.

Long-lasting Li-Polymer battery for IoT sensors

Customization Services (OEM/ODM)

We offer full OEM and ODM services to meet your unique design needs. Customize:

  • Wire Length & Gauge: Adjust wire length and thickness to fit your internal assembly layout.
  • Connector Types: Install JST, Molex, PHR or custom connectors to match your PCB.
  • PCB Integration: Add NTC thermistors, fuel gauges or custom protection circuits.
  • Packaging & Labeling: Custom branding, labeling and packaging options available.

Upgrade your product’s power source with the AS802035 — where safety, size and performance come together.

Low self-discharge Li-Polymer batteries provide reliable, long-term power for IoT sensors, tags, and wireless communication devices.