3.7V 180mAh Mini Li-Polymer Battery AS502025
This 3.7V 180mAh Li-Polymer battery (Model AS502025) offers reliable power in a slim, lightweight package. Featuring a built-in protection circuit and a standard 51021-2P connector, this rechargeable lithium-ion polymer cell is ideal for compact electronics requiring stable voltage and easy plug-and-play installation.
Description
Model AS502025 – Slim LiPo Battery
Voltage: 3.7V | Capacity: 180mAh (0.666Wh) | Size: 28×20.5×5.1mm

The AS502025 is a high-quality 3.7V 180mAh lithium polymer battery engineered for miniaturized applications. With compact dimension of 28mm x 20.5mm x 5.1mm, it fits perfectly into compact electronic equipment. Built-in protection circuit effectively avoids overcharging, overdischarging and short circuit risks. Fitted with AWG28 wires and 51021-2P connector, it achieves stable connection and supports both prototype development and bulk manufacturing.
Technical Specifications
| Battery Type | Lithium Ion Polymer Battery |
| Part Number | AS502025 |
| Voltage @ Capacity | 3.7V @ 180mAh (0.666Wh) |
| Protection Circuit | Yes (PCM Included) |
| Thermistor (NTC) | / |
| Wires | UL1571 AWG28 50mm |
| Connector | 51021-2P |
| Dimensions (L x W x T) | 28.0mm x 20.5mm x 5.1mm |
| Charge Current | 0.2C to 0.5C (Standard Charge) |
| Discharge Current | 0.5C to 1.0C (Continuous) |
| Storage Temperature | -20°C to +45°C |
Core Advantages
- ✔
Ultra-Compact Design: Mini size perfectly fits ultra-thin and tiny limited-space devices. - ✔
Built-in Safety: Protective circuit ensures stable and long service lifespan. - ✔
Standard Connector: Easy to assemble, replace and match mainstream devices. - ✔
High Energy Density: Stable power output inside miniature battery structure.
Perfect For Applications
Smart watches, fitness trackers, health monitoring gear.
Smart sensors, GPS locators, wireless transmission modules.
Bluetooth headsets, mini speakers, portable readers.
Portable diagnostic tools, hearing assistance devices.
Customization Service
We provide tailored battery solutions to satisfy diverse project demands. Customize capacity, dimension, connector type and wire length freely. Our professional team can modify existing models or develop exclusive battery packs matching your equipment perfectly.











