ASOL 102025 Lithium Polymer Battery — A high-rate 420mAh soft-pack Li-Po delivering 1.554Wh energy with a 3C discharge rate (1260mA peak). Compared to standard 1C batteries limited to 420mA, the 102025 delivers 3× more peak current for stable voltage under load — the ideal choice for Bluetooth trackers, key finders, wallet trackers, pet trackers, TWS earbuds charging cases, and voice recorders.
Why 3C vs Standard 1C — Discharge Rate Comparison
| Battery Type | Max Discharge Current | BT Tracker BLE Burst | TWS Case Charging | Voice Recorder Peak | Verdict |
|---|---|---|---|---|---|
| Standard 1C | 420mA | ⚠️ Marginal | ❌ Slow charge output | ❌ Too weak | Cannot sustain peak load |
| 102025 — 3C ★ | 1260mA | ✅ Stable advertising | ✅ Fast recharge cycle | ✅ Clean audio | Best choice |
Bluetooth trackers, TWS charging cases, and voice recorders all draw brief peak currents that exceed 1C ratings. The 102025’s 3C capability ensures stable BLE advertising power, fast earbuds recharging, and clean voice recording without voltage sag.
Why Lithium Polymer vs Cylindrical?
- ⚡ 3C High Discharge Rate — 1260mA peak current vs standard 1C’s 420mA ceiling
- 📐 Compact 10.5×20.5×28mm — Fits compact handheld device enclosures
- 🔋 420mAh in Compact Form — Sufficient capacity for a full day of device operation
- 📏 Stable Voltage Under Load — No sag during TWS music peaks, POS printing, or fan boost
- 🪶 Featherweight Soft Pack — Aluminum-laminated construction minimizes device weight
- 🔧 Flexible Integration — Adapts to compact and irregular enclosures
- 🏭 OEM-Friendly — Custom tabs, wires, connectors, and PCM available
Key Features
Compact power, built to last
High energy density with strong discharge capability.
3× more power than standard 1C batteries.
Fits compact handheld device enclosures.
No sag during peak power draws.
Reliable long-term performance with minimal degradation.
Charge 0–45°C / Discharge −20–60°C.
Safe for global air transport.
Custom tabs, wires, connectors, protection circuits.
Specifications
| Parameter | Value |
|---|---|
| Model | 102025 |
| Chemistry | Lithium Polymer (Li-Po) Soft Pack |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 420mAh |
| Nominal Energy | 1.554Wh |
| Dimensions (T×W×H) | 10.5×20.5×28mm |
| Max Discharge Rate | 3C (1260mA) |
| Charge Voltage | 4.2V |
| Standard Charge Current | 84mA (0.2C) |
| Max Charge Current | 420mA (1C) |
| Standard Discharge Current | 84mA (0.2C) |
| Max Discharge Current | 1260mA (3C, 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 (recommended) |
| Cycle Life | ≥500 cycles (100% DOD, 0.2C, 25°C) |
| Weight (Approx.) | ~9.5g |
| Certifications | UN38.3 |
Applications
Where the 102025 is used
6–12 month standby for AirTag-style BLE/UWB tags.
12–24 hr GPS + BLE tracking; 3C cold-start current.
3–5 earbud charges; fast 1260mA recharge output.
8–12 hr recording in slim pen or clip-on designs.
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
| 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 |
📌 Wholesale Note: Sample orders and custom specifications welcome. Full certification documentation provided with shipment.
❓ Frequently Asked Questions
What are the key specifications of the ASOL 102025 3.7V 420mAh Lithium Polymer Battery?
The ASOL 102025 3.7V 420mAh Lithium Polymer Battery is a 3.7V 420mAh lithium battery, measuring 10.5×20.5×28mm, weighing ~9.5g.
What is the maximum discharge current of the ASOL 102025 3.7V 420mAh Lithium Polymer Battery?
The ASOL 102025 3.7V 420mAh Lithium Polymer Battery supports a maximum continuous discharge current of 420mA.
How many charge cycles does the ASOL 102025 3.7V 420mAh Lithium Polymer Battery last?
The ASOL 102025 3.7V 420mAh Lithium Polymer Battery is rated for ≥500 cycles, well beyond the lifespan of a comparable standard cell.
What safety certifications does the ASOL 102025 3.7V 420mAh Lithium Polymer Battery have?
It is certified to UN38.3; certification documents are available to verified buyers.
Does ASOL offer OEM/ODM customization for the ASOL 102025 3.7V 420mAh Lithium Polymer Battery?
Yes. ASOL is a battery manufacturer, so capacity, voltage, cell configuration, connectors, wire length and custom labelling can all be built to your specification and order volume under OEM or ODM terms.
Can I get a free sample or a quote for the ASOL 102025 3.7V 420mAh Lithium Polymer Battery?
Yes — samples are free and you simply cover the freight. Reach us at info@asolbattery.com or +86 15779858703 on WhatsApp for pricing; we usually reply within 4 working hours.
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 →
