3.7V 110mAh Lithium Polymer Battery AS302323
3.7V 110mAh rechargeable lithium polymer battery with PCM protection. Slim / Compact 3.5mm design ideal for TWS earphones, smart wearables, and micro IoT devices. Custom OEM/ODM services available.
Description
Model AS302323 – Slim LiPo Battery
Voltage: 3.7V | Capacity: 110mAh (0.407Wh) | Size: 23.5mm × 23.5mm × 3.5mm

The AS302323 is a slim rechargeable lithium polymer (LiPo) battery designed for space‑constrained portable electronics. With a typical capacity of 110mAh and a thickness of just 3.5mm, this cell delivers reliable power in a compact form factor.
Featuring an integrated Protection Circuit Module (PCM) with wire leads, the AS302323 offers built‑in safety against over‑charge, over‑discharge, and short circuits. Its lightweight design (approx. 2.0g) makes it an ideal power source for miniature devices where weight and volume are critical.
Technical Specifications
| Battery Type | Lithium-ion Polymer Battery |
| Part Number | AS302323 |
| Nominal Voltage | 3.70V |
| Typical Capacity | 110mAh (0.407Wh) @ 0.2C discharge |
| AC Impedance (Cell) | ≤230mΩ |
| AC Impedance (With PCM & Wire) | ≤330mΩ |
| Charge Voltage | 4.20V |
| Standard Charge Current | 22mA (0.2C) |
| Max. Charge Current | 110mA (1.0C) |
| Max. Discharge Current | 110mA (1.0C) |
| Discharge Cut-off Voltage | 3.00V |
| Dimensions (L × W × T) | 23.5mm × 23.5mm × 3.5mm |
| Connector & Wire | Bare wires (UL3302 28AWG) |
| Weight | Approx. 2.0g ±0.5g |
| Protection Circuit | Built‑in PCM (Over‑charge, Over‑discharge, Short‑circuit) |
| Operating Temperature | Charge: 0~+45℃ / Discharge: -10~+50℃ |
| Storage Temperature | -10°C to +45°C |
Core Advantages
- ✔
Slim Form Factor: Just 3.5mm thick – fits easily into compact devices like hearing aids and smart wearables. - ✔
Integrated PCM Protection: Built‑in protection circuit ensures safe operation and extends battery life. - ✔
Lightweight: Approx. 2.0g – ideal for weight‑sensitive portable devices. - ✔
Ready-to-Use: Comes with PCM and UL3302 28AWG wire leads for easy integration into your product design.
Perfect For Applications
Hearing aids (BTE), clip‑on Bluetooth microphones, pocket voice recorders.
Smart badges, fitness sensors, asset tags, smart pins, pendant trackers, anti‑loss stickers.
Temp/humidity sensors, ESL, smart logistics tags, Bluetooth camera remotes, PPT clickers, keychain locators.
Smart pill boxes, wearable temperature patches, mini health monitors, portable therapy accessories (low‑power reminder/monitoring).
Customization Services (OEM/ODM)
We offer full flexibility to adapt the AS302323 to your project requirements:
- Connector Customization: Replace bare wires with JST, Molex, or custom connectors.
- Wire Length & Gauge: Adjust wire length or thickness to fit your assembly.
- Thickness Options: Available in various thicknesses for different capacity requirements.
- Branding: Add your logo or specific labeling to the battery shrink wrap.













