Why Polymer vs Cylindrical?
Unlike traditional 18650 cylindrical batteries, lithium polymer batteries offer:
- Thinner Profile — As low as 3mm thickness vs minimum 18mm for 18650
- Flexible Shape — Adapts to custom enclosures and curved designs
- Lighter Weight — Up to 30% lighter than equivalent capacity cylindrical cells
- No Pressure Vents — Safer for ultra-compact devices with limited venting
- Higher Energy Density — Maximizes capacity in minimal space
Key Features
- 🔋 High Energy Density — 9.25Wh in ultra-compact 50.5×55.5×7.6mm package
- 📦 Soft Pack Design — Aluminum-laminated polymer construction, lightweight and flexible
- 📐 Ultra-Slim Profile — 7.6mm thickness enables sleek, modern device aesthetics
- ⚡ Stable Discharge — Consistent voltage output throughout the entire discharge cycle
- 🔒 Multi-Certified — IEC62133, UL1642, KC, PSE, CB, BIS, CQC, UN38.3 certified
- 🌡️ Wide Operating Range — Charge: 0
45°C / Discharge: -2055°C - 🔄 300+ Cycles — Long service life with minimal capacity fade
- 🔧 Custom Integration — Available with tabs, wires, or custom connectors
Specifications
| Parameter | Value |
|---|---|
| Model | 505573 |
| Cell Type | Lithium Polymer (Li-Po) Soft Pack |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 2500mAh |
| Energy | 9.25Wh |
| Dimensions | 50.5×55.5×7.6mm |
| Configuration | 1S1P |
| Impedance | ≤150mΩ |
| Charge Voltage | 4.2V |
| Discharge Cut-off | 2.5V |
| Max Charge/Discharge | 2500mA (1C) |
| Charge Temp | 0~45°C |
| Discharge Temp | -20~55°C |
| Cycle Life | 300+ cycles |
| Certifications | IEC62133, UL1642, KC, PSE, CB, BIS, CQC, UN38.3 |
Applications
- TWS Earbuds & Charging Cases
- Smart Watches & Fitness Bands
- Bluetooth Audio & Mini Speakers
- Wireless Charging Pads
- Portable Medical Monitors
- Smart Home Controllers
- E-Readers & Digital Notepads
- Stylus Pens & Digital Tools
- IoT Sensors & Beacons
- Drones & Mini Cameras
Why Choose ASOL Li-Po Batteries?
ASOL’s polymer lithium batteries combine cutting-edge cell technology with rigorous quality assurance. The soft-pack design offers superior energy density, lighter weight, and greater design flexibility compared to cylindrical cells. Our Li-Po batteries undergo extensive testing including cycle life, temperature performance, safety, and transportation compliance. With 9 international certifications, ASOL Li-Po batteries are ready for global market deployment.
Contact Us
| info@asol-battery.com | |
| +86 15779858703 | |
| 🌐 Website | www.asol-battery.com |
| ⏰ Response Time | 24h on working days |
