ASOL 702530 Lithium Polymer Battery — A high-quality rechargeable Li-Po soft pack battery engineered for portable consumer electronics. Delivering 250mAh (0.925Wh) in a compact 70.5×25.5×32.5mm form factor, this battery is specifically designed for Bluetooth headphones, TWS earbud charging cases, portable speakers, beauty instruments, gaming headsets, and handheld electronic devices. The aluminum-laminated soft pack construction provides superior energy density, lighter weight, and greater design flexibility compared to traditional cylindrical lithium-ion cells, making it the preferred choice for modern slim and portable product designs.
🔋 Why Polymer vs Cylindrical?
Unlike traditional cylindrical batteries, lithium polymer batteries offer:
- 📏 Compact Form Factor — Slim profile fits tight, elongated enclosures in portable devices
- 🔄 Flexible Shape — Adapts to custom enclosures and unique device geometries
- 🪶 Lightweight — Reduces overall product weight for wearable and handheld devices
- 🔒 No Pressure Vents — Safer for sealed consumer electronics enclosures
- ⚡ Higher Energy Density — More capacity in the same or smaller footprint
- 🛠️ OEM-Friendly Customization — Wires, connectors, and protection circuits can be added
Key Features
- 🎧 Reliable Capacity — 250mAh (0.925Wh) powers Bluetooth headphones, speakers, and portable devices
- 📦 Soft Pack Design — Aluminum-laminated polymer, lightweight and flexible form factor
- ⚡ Low Internal Resistance — ≤200mΩ for efficient power delivery and stable voltage output
- 🔄 500+ Cycles — Long service life with minimal capacity fade (tested at 100% DOD, 0.5C)
- 🌡️ Wide Temperature Range — Charge: 0~45°C / Discharge: -20~60°C for versatile environments
- 🔧 Custom Integration — Available with wires, connectors, or protection circuits (PCM/PTC)
- ✅ UN38.3 Certified — Safe for air transport worldwide
- 🏭 OEM/ODM Support — Custom dimensions, capacity, connectors, and branding available
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 702530 |
| Cell Type | Lithium Polymer (Li-Po) Soft Pack |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 250mAh |
| Energy | 0.925Wh |
| Dimensions | 70.5mm × 25.5mm × 32.5mm (T×W×H) |
| Thickness | 32.5mm |
| Configuration | 1S1P |
| AC Impedance | ≤200mΩ |
| Charge Voltage | 4.2V |
| Standard Charge Current | 125mA (0.5C) |
| Max Charge Current | 250mA (1C) |
| Discharge Cut-off | 3.0V |
| Max Discharge Current | 250mA (1C) |
| Charge Temperature | 0~45°C |
| Discharge Temperature | -20~60°C |
| Storage Temperature | -10~35°C (recommended for long-term storage) |
| Cycle Life | ≥500 cycles (100% DOD, 0.5C charge/discharge, 80% retention) |
| Weight | Approx. 5~6g (varies by configuration) |
| Certifications | UN38.3 |
Applications
| 🎧 Audio | ✨ Beauty | 🎮 Gaming | 📱 Wearables | 📷 Other |
|---|---|---|---|---|
| Bluetooth Headphones | Facial Cleansing Brushes | Handheld Gaming | Fitness Trackers | Compact Cameras |
| Portable Speakers | Facial Massagers | Retro Gaming Devices | Smart Bands | Action Cameras |
| Gaming Headsets | Eye Massagers | GPS Trackers | Wireless Controllers | |
| TWS Earbud Cases | EMS Devices | Smart Remotes | Health Monitors | |
| Mini Speakers | LED Therapy Devices | IoT Sensors | Wireless Sensors |
🎧 Audio & Sound
Bluetooth headphones, gaming headsets, TWS (True Wireless Stereo) earbud charging cases, mini portable speakers, in-ear monitors (IEM), wireless earplugs, bone conduction headphones, over-ear headphones for kids
✨ Beauty & Personal Care
Facial cleansing brushes, facial massagers, eye massagers, facial steamers, EMS toning devices, derma rollers, teeth whitening kits, LED light therapy masks, hair removal devices, handheld beauty instruments
🎮 Gaming & Entertainment
Handheld game consoles, retro gaming devices, electronic learning toys, interactive plush toys, handheld gaming devices, dance mats, kids’ entertainment devices
📱 Smart Wearables & IoT
Fitness trackers, smart bands, GPS pet trackers, asset GPS trackers, smart watches (entry-level), smart rings, Bluetooth beacons, IoT sensors, environmental monitoring devices, smart home controllers
📷 Photography & Security
Action cameras (e.g. AKASO, Campark), compact digital cameras, dash cams (secondary battery), body cameras, home security sensors, wireless door sensors, alarm key fobs, smart door locks (secondary backup)
Why Choose ASOL Li-Po Batteries?
ASOL Battery is a professional lithium polymer battery manufacturer with years of experience supplying OEM and ODM partners worldwide. Our Li-Po soft pack batteries are engineered for modern portable consumer electronics — from Bluetooth audio devices and beauty instruments to smart wearables and educational toys. Every battery undergoes strict quality control, UL/CE/IEC-compliant testing, and is UN38.3 certified for safe global air transport. We offer flexible customization including custom dimensions, connector types, wire lengths, protection circuits, and branding options to meet your specific product requirements. Reliable performance, consistent quality, and responsive technical support — that’s the ASOL promise.
Wholesale Pricing
| Quantity | Unit Price | Savings |
|---|---|---|
| 100-499 pcs | Contact us | — |
| 500-999 pcs | Contact us | 8% off |
| 1000+ pcs | Contact us | 15% off |
Sample orders and custom specifications are welcome. Contact us for detailed pricing and lead times.
Contact Us
| Channel | Information |
|---|---|
| info@asol-battery.com | |
| +86 15779858703 | |
| 🌐 Website | www.asol-battery.com |
| ⏰ Response Time | 24 Hours on Working Days |
