ASOL 902035 Lithium Polymer Battery — A premium-grade rechargeable Li-Po soft pack battery designed for GPS tracking devices, smart wearables, and a wide range of portable consumer electronics. With a substantial capacity of 620mAh (2.29Wh) packed into a slim profile of just 9.5mm thick, this battery provides extended operating time for power-hungry devices like GPS trackers, smart watches, Bluetooth headphones, portable speakers, fitness trackers, TWS earbuds, medical devices, and electronic toys.
The aluminum-laminated polymer construction delivers superior energy density, lightweight design, and flexible integration options — outperforming traditional cylindrical cells in compact applications. Backed by UN38.3 certifications, the ASOL 902035 is trusted by manufacturers worldwide for safe, reliable, long-lasting power.
⭐ Most Popular Applications
GPS Tracker / Smart Watch / Bluetooth Headphone / Portable Speaker — these four categories account for the majority of ASOL 902035 battery orders. The 620mAh capacity provides the perfect balance of size and runtime for these devices.
🔋 Why Polymer vs Cylindrical?
Unlike traditional cylindrical batteries (such as 18650 or 14500), lithium polymer (Li-Po) batteries offer distinct advantages for compact consumer devices:
- Slim & Compact — At only 9.5mm thick, the 902035 fits perfectly in slim wearable enclosures that cylindrical batteries cannot accommodate
- Flexible Form Factor — Soft pack design adapts to custom curved enclosures, ideal for smart watches and wearable devices
- Lightweight — Significantly lighter than cylindrical cells, reducing overall device weight for comfortable all-day wear
- No Pressure Vents Needed — Safer for sealed, compact consumer electronics enclosures without ventilation requirements
- Higher Energy Density — 620mAh capacity in a compact footprint, maximizing runtime without increasing device size
- OEM-Friendly Shape — Custom dimensions allow direct drop-in replacement for specific device battery compartments
Key Features
Slim power, built to integrate
620mAh / 2.29Wh for extended runtime in compact devices.
Aluminum-laminated polymer, only 9.5mm thick, light and flexible.
≤150mΩ internal resistance for stable, efficient power.
≥500 charge/discharge cycles with minimal degradation.
Discharges -20°C to 55°C; charges 0°C to 45°C.
Optional PCM, plus custom wires, connectors, and tabs.
UN38.3-compliant for global markets and safe air transport.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | 902035 |
| Cell Type | Lithium Polymer (Li-Po) Soft Pack |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 620mAh |
| Energy | 2.29Wh |
| Dimensions | 9.5×20.5×38mm (T×W×H) |
| Thickness | 9.5mm |
| Configuration | 1S1P |
| Impedance (ACR) | ≤150mΩ |
| Charge Voltage | 4.2V |
| Charge Current | 310mA (0.5C) |
| Discharge Cut-off | 2.5V |
| Max Discharge Current | 620mA (1C) |
| Charge Temp | 0~45°C |
| Discharge Temp | -20~55°C |
| Cycle Life | ≥500 cycles (at 0.5C, 25°C) |
| Certifications | UN38.3 |
Applications
Where the 902035 is used
Personal, pet, vehicle & asset locators with live tracking.
Smart watches, kids 4G watches, fitness bands & rings.
TWS earbuds, headphones & portable Bluetooth speakers.
Pulse oximeters, BP monitors & Bluetooth smart scales.
Why ASOL
Factory-direct, fully customizable
Connector, wire gauge, heat-shrink color, custom brand label, BMS & housing.
Integrated PCB against overcharge, over-discharge, overcurrent & short circuit.
Grade-A cells, voltage-matched ±10mV for stable, reliable performance.
Custom prototype samples in 5–7 business days before volume production.
Every unit tested for OCV, capacity & protection. Defect rate <0.3%.
UN38.3 Class 9 air & sea · DHL/FedEx/UPS · EXW/FOB/CIF/DDP.
Wholesale Pricing & Samples
| 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 available. Contact us for bulk pricing and lead times.
❓ Frequently Asked Questions
What are the key specifications of the ASOL 902035 3.7V 620mAh Lithium Polymer Battery?
The ASOL 902035 3.7V 620mAh Lithium Polymer Battery is a 3.7V 620mAh lithium battery, built in a 1S1P configuration, measuring 9.5×20.5×38mm.
What is the maximum discharge current of the ASOL 902035 3.7V 620mAh Lithium Polymer Battery?
The ASOL 902035 3.7V 620mAh Lithium Polymer Battery supports a maximum continuous discharge current of 620mA.
How many charge cycles does the ASOL 902035 3.7V 620mAh Lithium Polymer Battery last?
The ASOL 902035 3.7V 620mAh Lithium Polymer Battery is rated for ≥500 cycles, for years of dependable performance in your device.
What safety certifications does the ASOL 902035 3.7V 620mAh Lithium Polymer Battery have?
It is certified to UN38.3, with test reports supplied on request for compliance.
Does ASOL offer OEM/ODM customization for the ASOL 902035 3.7V 620mAh Lithium Polymer Battery?
Absolutely. As the manufacturer, ASOL tailors the cell — voltage, capacity, connector, wiring and private-label printing — to match your device and production volume through our OEM/ODM service.
Can I get a free sample or a quote for the ASOL 902035 3.7V 620mAh Lithium Polymer Battery?
We offer free samples (you cover shipping). For a quote, email info@asolbattery.com or WhatsApp +86 15779858703 — replies typically arrive within 4 hours on business days.
Contact Us
| Channel | Information |
|---|---|
| info@asolbattery.com | |
| +86 15779858703 | |
| 🌐 Website | www.asolbattery.com |
| ⏰ Response Time | 24 Hours on Working Days |
Need a different size or capacity? Explore ASOL’s full lithium polymer battery range →
