ASOL 500943 Lithium Polymer Battery — An ultra-compact Lithium Polymer soft-pack cell with 185mAh (0.685Wh) capacity, purpose-engineered for slim active stylus pens and precision input devices. Measuring just 5.1mm thin with a slender 10.5 × 45mm body, this battery is designed to fit inside the narrow barrel of smart pens, digital drawing styli, interactive whiteboard pens, and e-paper writing devices where space is critically limited. With an extended operating temperature range of -20°C to +60°C and an impressive cycle life of ≥500 cycles, the 500943 delivers consistent, long-lasting performance for premium stylus products demanding high reliability, compact form factor, and full OEM integration flexibility.
Why Lithium Polymer for Stylus Pen Applications?
- Ultra-Slim 5.1mm Thickness — Engineered to fit the narrow barrel of slim stylus pens (≥mm diameter) where no cylindrical cell can fit
- Precise Form Factor — 10.5 × 45mm footprint precisely matches the internal space of standard active stylus pen housings
- Long Cycle Life ≥500 Cycles — Outlasts typical stylus usage patterns; 500+ charge cycles ensures 2-3 years of daily use without significant capacity fade
- Temperature Range — Reliable performance from -20°C to +60°C; works in cold outdoor environments and warm enclosed carrying cases
- Lightweight Construction — Aluminum-laminated soft pack weighs just ~4-5g, maintaining the natural balance and feel of precision stylus pens
- OEM Integration Ready — Custom wire length, ultra-thin connector (JST 1.0), and protection circuit module (PCM) available for direct pen assembly integration
Key Features
Slim power for precision styluses
Optimized energy density for extended stylus runtime in tight spaces.
5.1 × 10.5 × 45mm; designed for slim stylus barrels.
Discharge −20°C to +60°C; reliable across diverse environments.
Superior longevity for daily-use precision input devices.
4.2V charge / 3.0V cutoff for consistent input accuracy.
Efficient power delivery for low-power BLE and EMR electronics.
Aluminum-laminated soft pack minimizes impact on pen balance.
Matches typical stylus BLE chip and pressure sensor current.
Custom wire length, connector, polarity, and PCM protection available.
Safe for air transport; CE, MSDS, RoHS documentation available.
Full Specifications
| Parameter | Value |
|---|---|
| Model | ASOL 500943 |
| Cell Type | Lithium Polymer (Lithium Polymer) Soft Pack |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 185mAh |
| Energy | 0.685Wh |
| Dimensions (T×W×L) | 5.1 × 10.5 × 45 mm |
| Weight (approx.) | ~4-5g |
| Configuration | 1S1P |
| AC Impedance | ≤100mΩ |
| Charge Voltage (Cutoff) | 4.2V |
| Discharge Cutoff Voltage | 3.0V |
| Max Continuous Discharge Current | 185mA (1C) |
| Charge Temperature | 0°C ~ +45°C |
| Discharge Temperature | -20°C ~ +60°C |
| Storage Temperature | -10°C ~ +35°C (recommended) |
| Cycle Life | ≥500 cycles |
| Self-Discharge Rate | ≤3% per month (at 25°C) |
| Connector | JST 1.0 PH / Customizable |
| Certifications | UN38.3; CE, MSDS, RoHS available |
Applications
Where the 500943 is used
5.1mm slim cell powers hours of tablet handwriting.
Stable 3.7V for pressure-sensitive art styli & BLE.
185mAh fits e-ink writing pens like reMarkable.
−20°C to +60°C, sterilizable clinical input pens.
Compatible Device Categories
| Device | Type |
|---|---|
| Active Stylus | Capacitive / EMR Pen |
| Pen | Art / Pressure Stylus |
| E-Paper Pen | Digital Notepad |
| Whiteboard Pen | IWB / Classroom |
| Signature Stylus | POS / Signing Pad |
| Medical Pen | Clinical / EMR Input |
| Smart Pen | Handwriting Digitizer |
| Industrial Input | Rugged Field Pen |
| Tablet Stylus | iPad / Android Pen |
| Laptop Pen | 2-in-1 / Surface Pen |
| Pen | Interactive Display |
| Annotation Pen | PDF / Document Tool |
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.
Inspection requirements and acceptance criteria are confirmed according to the product configuration and project requirements.
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 · Shipping arrangements and delivery terms are confirmed according to destination and project requirements.
Pricing depends on quantity, battery configuration and project requirements. Contact us for a quotation.
Frequently Asked Questions
What are the key specifications of the ASOL 500943 3.7V 185mAh Lithium Polymer Battery Cell?
The ASOL 500943 3.7V 185mAh Lithium Polymer Battery Cell is a 3.7V 185mAh lithium battery, built in a 1S1P configuration, measuring 5.1 × 10.5 × 45 mm, weighing ~4-5g.
What connector does the ASOL 500943 3.7V 185mAh Lithium Polymer Battery Cell use?
It ships pre-wired with a JST 1.0 PH connector. ASOL can customize the connector type, wire length, and labeling to match your device.
What is the maximum discharge current of the ASOL 500943 3.7V 185mAh Lithium Polymer Battery Cell?
The ASOL 500943 3.7V 185mAh Lithium Polymer Battery Cell supports a maximum continuous discharge current of 185mA.
How many charge cycles does the ASOL 500943 3.7V 185mAh Lithium Polymer Battery Cell last?
The ASOL 500943 3.7V 185mAh Lithium Polymer Battery Cell is rated for ≥500 cycles, retaining strong capacity across its service life.
What safety certifications does the ASOL 500943 3.7V 185mAh Lithium Polymer Battery Cell have?
It is certified to UN38.3, CE, MSDS, and full test reports can be provided on request.
Does ASOL offer OEM/ODM customization for the ASOL 500943 3.7V 185mAh Lithium Polymer Battery Cell?
Yes. As a lithium battery manufacturer, ASOL provides full OEM/ODM customization — capacity, voltage, cell configuration, connector type, wire length, and label printing can all be tailored to your application and order volume.
Can I get a sample or a quote for the ASOL 500943 3.7V 185mAh Lithium Polymer Battery Cell?
Yes. 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. Email info@asolbattery.com or message +86 15779858703 on WhatsApp for a quote — ASOL typically responds within 24 hours on working days.
Contact ASOL Battery
- Email: info@asolbattery.com
- WhatsApp: +86 15779858703
- Website: www.asolbattery.com
- Response: Within 24 Hours on Working Days
Need a different size or capacity? Explore ASOL’s full lithium polymer battery range →
