3.7V 420mAh Lithium-ion Polymer Battery AS802035

Reliable 3.7V 420mAh AS802035 Lithium-ion 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 – Lithium-ion Polymer Battery

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.

Compact Li-Polymer battery for small consumer electronics

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 15°C to +35°C

Compact Li-Polymer battery for small consumer electronics

Core Advantages


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

  • 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

Micro Wearable Devices
TWS Bluetooth earbud charging cases, kids GPS tracking bracelets, mini sports pedometers
Small Smart Accessories
Bluetooth anti-lost trackers,LED keychain lights, electronic bookmark lights, mini ambient night lights,
Micro IoT Sensing Devices
Asset tracking tags, temperature and humidity sensor beacons, low-power Bluetooth Beacons, smart door and window sensors
Small Personal Care Appliances
Rechargeable electric eyebrow trimmers, mini eye vibrating massagers, compact portable facial mist sprays

Compact Li-Polymer battery for small consumer electronics

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.

Compact Li-Polymer battery for small consumer electronics