ASOL 903659 Lithium Polymer Battery — A wide-temperature 2500mAh (9.25Wh) soft-pack Lithium Polymer battery engineered for smart home security and outdoor monitoring applications. The -20°C to +60°C operating range covers extreme conditions that defeat standard consumer batteries — outdoor winter security monitoring, summer sun-exposed cameras, and year-round smart home devices. The compact 9.0×36×59mm rectangular footprint fits wireless security camera battery packs, smart video doorbell housings, solar camera enclosures, smart bird feeder camera compartments, and smart door lock battery compartments.
Why Wide Temperature -20°C to +60°C?
| Environment | Standard Battery (0~45°C) | ASOL 903659 (-20~60°C) |
|---|---|---|
| Outdoor Security Camera (Winter) | Fails below 0°C | ✓Works at -20°C |
| Dashcam in Parked Car (Summer) | Fails above 45°C | ✓Works at +60°C |
| Outdoor GPS Tracker (Winter) | Fails below 0°C | ✓Works at -20°C |
| Smart Video Doorbell (All Season) | Limited to mild climates | ✓-20°C to +60°C |
Standard consumer Lithium Polymer batteries are rated for 0°C to +45°C charging and 0°C to +60°C discharging. The 903659’s -20°C lower limit extends deployment into outdoor winter security monitoring, cold-weather GPS tracking, and year-round smart home installations.
Key Features
Ultra-low-temp power, built tough
Engineered for security cameras, doorbells, solar cams, and smart locks.
High capacity for extended outdoor devices and smart hardware backup.
Fits camera, doorbell, solar, and smart lock battery compartments.
Long-term reliability for embedded applications.
UN38.3 certified for safe global shipping.
Supports high-drain device startup.
Customizable connector options available.
Integrated circuit guards against overcharge and short circuit.
Specifications
| Parameter | Value |
|---|---|
| Model | 903659 |
| Chemistry | Lithium Polymer (Lithium Polymer) Soft Pack |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 2500mAh |
| Nominal Energy | 9.25Wh |
| Dimensions (T×W×H) | 9.0×36×59mm |
| Weight (Approx.) | Approx. 45–50g, depending on configuration |
| Impedance | ≥50mΩ |
| Charge Voltage | 4.2V |
| Standard Charge Current | 500mA (0.2C) |
| Max Charge Current | 2500mA (1C) |
| Standard Discharge Current | 500mA (0.2C) |
| Max Discharge Current | 2500mA (1C, continuous) |
| Charge Cut-off | 4.2V |
| Discharge Cut-off | 3.0V |
| Charge Temperature | 0~45°C |
| Discharge Temperature | -20~60°C |
| Storage Temperature | -20~45°C |
| Cycle Life | ≥500 cycles (80% capacity retention) |
| Certifications | UN38.3 |
| Protection | Built-in PCM |
| Connector | 3-Pin JST (Customizable) |
Applications
Where the 903659 is used
WiFi wire-free cams — 2-4 weeks continuous, 2-3 months on motion.
Battery doorbell cameras — 3-6 months standby in -20°C to +60°C.
Backup power for solar trail & wildlife cams in low-sun periods.
AI bird-watching cams — 1-2 months continuous recording.
Fingerprint & keypad locks — 6-12 months per charge.
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.
Sample evaluation may be available for selected cylindrical and lithium polymer battery projects, subject to specification review and product availability. Sample freight is paid by the customer.
Inspection requirements and acceptance criteria are confirmed for each project before order release.
UN38.3 Class 9 air & sea · DHL/FedEx/UPS · EXW/FOB/CIF/DDP.
Wholesale Pricing
| Quantity | Unit Price | Savings |
|---|---|---|
| 100-499 pcs | Contact us | - |
| 500-999 pcs | Contact us | 8% off |
| 1,000-4,999 pcs | Contact us | 15% off |
| 5,000+ pcs | Contact us | 20%+ off |
We welcome sample and custom-spec orders, with full certification documents provided.
Frequently Asked Questions
What are the key specifications of the ASOL 903659 3.7V 2500mAh Lithium Polymer Battery Cell?
The ASOL 903659 3.7V 2500mAh Lithium Polymer Battery Cell is a 3.7V 2500mAh lithium battery, measuring 9.0×36×59mm, weighing approximately 45–50g, depending on configuration.
What connector does the ASOL 903659 3.7V 2500mAh Lithium Polymer Battery Cell use?
It ships pre-wired with a 3-Pin JST connector. ASOL can customize the connector type, wire length, and labeling to match your device.
What is the maximum discharge current of the ASOL 903659 3.7V 2500mAh Lithium Polymer Battery Cell?
The ASOL 903659 3.7V 2500mAh Lithium Polymer Battery Cell supports a maximum continuous discharge current of 2500mA.
How many charge cycles does the ASOL 903659 3.7V 2500mAh Lithium Polymer Battery Cell last?
The ASOL 903659 3.7V 2500mAh Lithium Polymer Battery Cell is rated for ≥500 cycles, well beyond the lifespan of a comparable standard cell.
What safety certifications does the ASOL 903659 3.7V 2500mAh Lithium Polymer Battery Cell have?
It is certified to UN38.3; certification documents are available to verified buyers.
Does ASOL offer OEM/ODM customization for the ASOL 903659 3.7V 2500mAh Lithium Polymer Battery Cell?
Yes. ASOL is a battery manufacturer, so capacity, voltage, cell configuration, connectors, wire length and custom labeling can all be built to your specification and order volume under OEM or ODM terms.
Can I get a sample or a quote for the ASOL 903659 3.7V 2500mAh Lithium Polymer Battery Cell?
Sample evaluation may be available for selected cylindrical and lithium polymer battery projects, subject to specification review and product availability. Sample freight is paid by the customer. Reach us at info@asolbattery.com or +86 15779858703 on WhatsApp for pricing; we usually reply within 24 hours on working days.
Contact Us
| Channel | Information |
|---|---|
| info@asolbattery.com | |
| +86 157 7985 8703 | |
| Website | www.asolbattery.com |
| Response Time | Within 24 hours on working days |
Need a different size or capacity? Explore ASOL’s full lithium polymer battery range →
