The ASOL 606090 lithium polymer battery is a professional-grade, rechargeable 3.7V 4000mAh Li-Po pouch cell engineered for devices where space is at a premium. At just 6mm thin and 60×90mm footprint, this polymer lithium ion battery packs 14.8Wh of dependable energy into one of the slimmest 4000mAh form factors on the market. Whether you are building a credit-card-sized Bluetooth speaker, designing a battery replacement for an e-reader, powering an educational tablet for kids, sourcing OEM batteries for portable medical devices, upgrading GPS navigators, or integrating into smart home control panels — the ASOL 606090 delivers the perfect balance of thinness, capacity, and safety compliance.
Technical Specifications
| Parameter | Value |
|---|---|
| Model Number | ASOL 606090 |
| Battery Chemistry | Lithium Polymer (Li-Po / Li-Poly) — pouch cell |
| Nominal Voltage | 3.7V |
| Rated Capacity | 4000mAh (4.0Ah) |
| Rated Energy | 14.8Wh |
| Maximum Charge Voltage | 4.2V ± 0.05V |
| Discharge Cut-off Voltage | 2.75V |
| Standard Charge Current | 0.2C (800mA) |
| Max Charge Current | 1C (4000mA) |
| Standard Discharge Current | 0.2C (800mA) |
| Max Continuous Discharge | 1C (4000mA) |
| Dimensions (T × W × L) | 6.0 × 60.0 × 90.0 mm |
| Imperial Dimensions | 0.24″ × 2.36″ × 3.54″ |
| Net Weight | ~75g ± 3g |
| Default Connector | JST PH 2.0mm (2-pin, female) |
| Default Wire Length | 50mm (2″) — customizable to spec |
| Wire Gauge | AWG 24 — customizable |
| Cycle Life | ≥ 500 cycles (to 80% capacity) |
| Operating Temperature (Charge) | 0°C ~ +45°C |
| Operating Temperature (Discharge) | -20°C ~ +60°C |
| Storage Temperature | -20°C ~ +35°C (recommended: 15°C ~ 25°C) |
| PCB Protection | Overcharge (4.25V), Overdischarge (2.5V), Short Circuit, Over-Temperature |
| Cell Casing | Aluminum-plastic film (soft pouch — no rigid metal can) |
| Safety Certifications | CE (EU), RoHS, UN38.3 (air freight), UL1642, IEC62133 (optional) |
Why Engineers & Buyers Choose the ASOL 606090
1. Genuine 6mm Ultra-Slim Design — No Exaggerated Claims
Many “6mm” Li-Po batteries on the market actually measure 7~8mm after including PCB thickness and swelling tolerance. The ASOL 606090 measures 6.0mm ± 0.3mm at the cell body — verified on every batch. If your product design has a <7mm internal clearance, this is one of the few 4000mAh options that actually fits.
2. Verified 4000mAh Capacity — Batch-Tested
Every shipment includes a capacity test report. Unlike some suppliers that label 3600mAh cells as “4000mAh,” our cells are tested to deliver ≥3950mAh at 0.2C discharge before shipping. You get what you pay for.
3. 14.8Wh = Real-World Runtime You Can Count On
- Ultra-thin card Bluetooth speaker: 12~16 hours continuous playback
- E-reader: 20~30 hours reading (weeks of typical use)
- Educational tablet: 5~8 hours of interactive learning
- Portable medical device: 8~16 hours continuous operation
- GPS navigator: 3~5 hours active navigation
- Smart home control panel: 12~24 hours per charge
4. Full-Spectrum Protection — Not Just a BMS Label
The built-in PCB protection circuit monitors four parameters simultaneously:
- Overcharge: Cuts off at 4.25V ± 0.05V
- Overdischarge: Cuts off at 2.5V ± 0.1V
- Short Circuit: < 150μs response time
- Over-Temperature: Triggers at 85°C (charge) / 95°C (discharge)
5. Ready for Global E-Commerce — 4 Major Certifications
| Certification | Scope | Required For |
|---|---|---|
| CE | EU market access | Amazon EU, eBay Europe, EU customs |
| RoHS | Hazardous substance compliance | All regulated markets |
| UN38.3 | Air transport safety | Air freight, Amazon FBA inbound |
| UL1642 | Cell-level safety (US standard) | US retail, Amazon.com, Walmart |
6. Direct from Manufacturer — Cut Out the Middleman
ASOL Battery is the factory, not a reseller. When you buy from us:
- No distributor markup (save 20~40% vs Amazon/eBay retail pricing)
- Direct technical support from our engineering team
- Custom specifications at production cost, not “custom pricing” surcharges
- Consistent quality — no mixed batches from unknown sources
Which Products Use a 606090 4000mAh Battery?
🔥 Top Applications — Engineered Match
| Device Category | Why 606090 Is the Right Battery | Typical Runtime | Search Keywords Customers Use |
|---|---|---|---|
| Ultra-Thin Card Bluetooth Speakers | 6mm profile fits credit-card-sized enclosures | 12~16h playback | bluetooth speaker battery, card speaker battery 4000mAh, ultra thin speaker lipo |
| E-Readers | Ultra-slim 6mm fits thin e-reader chassis perfectly | 20~30h reading | e-reader battery, Kindle replacement battery, e-ink reader lipo |
| Educational Tablets | 6mm thin battery ideal for kid-safe learning tablets | 5~8h use | educational tablet battery, kids tablet battery, learning tablet lipo |
✅ Also a Strong Fit
| Device Category | Runtime Estimate | Search Keywords |
|---|---|---|
| Portable Medical Devices | 8~16h operation | portable medical device battery, patient monitor lipo, medical equipment battery 3.7V |
| GPS Navigators | 3~5h active navigation | GPS navigator battery, car GPS battery replacement, navigation device lipo |
| Smart Home Control Panels | 12~24h per charge | smart home control panel battery, home automation display battery, wall panel lipo |
ASOL 606090 vs Competitor 606090 Batteries
| Feature | ASOL 606090 | Generic Amazon 606090 | Unbranded Alibaba 606090 |
|---|---|---|---|
| Verified Capacity | ✅ Batch-tested ≥3950mAh | ❓ May be 3200~3600mAh | ⚠️ Unverified — varies by batch |
| Thickness Accuracy | ✅ 6.0mm ± 0.3mm | ⚠️ Often 7~8mm with PCB | ⚠️ ±1mm tolerance common |
| PCB Protection | ✅ Quad-protection (OV/UV/SC/OT) | ⚠️ Basic OV only | ⚠️ May be missing entirely |
| Certification Docs | ✅ CE / RoHS / UN38.3 / UL1642 included | ⚠️ Claimed, not always provided | ❌ Rarely available |
| Capacity Test Report | ✅ Included with every shipment | ❌ Not provided | ❌ Not provided |
| MOQ | 💚 100 units (samples: 1~10) | — Retail only | 🟡 Often 1,000+ |
| Custom Connector/Wire | ✅ Yes — no surcharge | ❌ Fixed spec only | ✅ Yes — with large MOQ |
| Direct Factory Pricing | ✅ Yes | ❌ Retail markup 30~60% | ✅ Yes (but quality unknown) |
| Technical Support | ✅ Engineer replies in 24h | ❌ Seller support only | ⚠️ Language barrier common |
| Amazon FBA Ready | ✅ Full docs for Hazmat review | ❓ May lack UN38.3 | ❌ Rarely prepared |
Frequently Asked Questions
Q1: Is the ASOL 606090 a genuine 4000mAh battery, or is the capacity exaggerated?
A: We test every production batch and provide a capacity verification report with your order. Our QC standard requires ≥3950mAh at 0.2C discharge before shipment. If you receive cells below spec, we replace them — no questions asked. Many “4000mAh” listings on Amazon and AliExpress actually deliver 3200~3600mAh cells. We compete on quality, not false claims.
Q2: Can this battery replace a tablet / e-reader / speaker battery?
A: Yes — if three conditions match. (1) Dimensions: Your device bay must accommodate 6×60×90mm (±1mm). (2) Connector: The default is JST PH 2.0mm; we can customize to match your device’s connector. (3) Voltage: Must be 3.7V nominal (4.2V max charge). Pro tip: Before ordering, measure your old battery and photograph the connector. Send us the photo, and we will confirm compatibility within 24 hours.
Q3: Does this come with the JST connector pre-soldered?
A: Yes. The default configuration ships with a JST PH 2.0mm female connector soldered to the PCB and 50mm wires. If you need a different connector (JST XH, Molex, ZH, PH 1.25mm, bare wire, etc.), specify it when ordering — we customize at no extra charge for orders of 100+ units.
Q4: Is the PCB protection circuit already attached?
A: Yes. Every ASOL 606090 ships with the protection PCB integrated directly onto the cell. This is not an “optional add-on.” The PCB provides overcharge, overdischarge, short circuit, and temperature protection as standard.
Q5: Can I use this for Amazon FBA / eBay fulfillment?
A: Absolutely. Our battery includes UN38.3 test reports (required for air freight), MSDS sheets, and all documentation needed for Amazon’s dangerous goods (Hazmat) review process. We ship thousands of units to Amazon FBA warehouses monthly for our OEM partners. Request the compliance package with your order.
Q6: What is the minimum order quantity (MOQ)?
A: 100 units for bulk OEM pricing. 1~10 units for sample orders or prototype testing. Samples ship within 48 hours via DHL/FedEx. Bulk production lead time is 7~15 business days, depending on customization requirements.
Q7: How long will this battery last in my device?
A: Run a simple calculation. Runtime (hours) = 14.8Wh ÷ Device Power Consumption (W). For example: a Bluetooth speaker drawing 1.2W → 14.8 ÷ 1.2 ≈ 12.3 hours. A GPS tracker reporting hourly at 0.05W average → 14.8 ÷ 0.05 ≈ 296 hours (~12 days). Not sure about your device’s power draw? Email us your specs and we will estimate it for you.
Q8: How should I store unused 606090 batteries?
A: Store at 15°C ~ 25°C, at 40~60% charge (approximately 3.7~3.8V), away from direct sunlight and metal objects. Do not store fully charged or fully discharged for extended periods. Under recommended conditions, shelf life is 12+ months with <10% capacity loss. For long-term storage (>3 months), check voltage every 3 months and recharge to 40~60% if below 3.6V.
Q9: Can this battery be used in series or parallel configurations?
A: Yes, but with caution. We support 1S2P (7400mAh) and 2S1P (7.4V) configurations with matched cells for OEM orders. If you plan to build your own pack, ensure cells are from the same batch and at equal voltage before connecting. We offer pre-matched cell pairs with identical internal resistance for your DIY builds — ask for this service when ordering.
Q10: Does ASOL offer private labeling or custom packaging?
A: Yes — this is what we do best. We provide:
- Custom heat-shrink sleeve with your brand logo
- Custom product labels (barcode, specs, warnings)
- Retail-ready packaging (blister card, box, polybag)
- Insert cards with your branding and QR codes
- Amazon FNSKU labeling compliance MOQ for private labeling is 500 units. Send your artwork files and we return a mockup for approval in 48 hours.
Q11: How do I know the connector polarity (+/-) is correct?
A: The standard wiring is Red = Positive (+) / Black = Negative (-) — same as virtually all consumer electronics. The JST PH 2.0mm connector follows the standard pinout (Pin 1 = +, Pin 2 = -). If your device uses reversed polarity, please notify us before ordering. We strongly recommend verifying polarity with a multimeter before installation — reversed polarity can permanently damage your device.
OEM / ODM Customization Services
ASOL Battery is a direct lithium polymer battery manufacturer (not a trading company). We serve 100+ brands in 30+ countries, supplying custom battery solutions for consumer electronics, IoT, automotive aftermarket, and industrial devices.
| Service | Standard | Custom Options |
|---|---|---|
| Connector | JST PH 2.0mm | JST XH, ZH, SH, Molex PicoBlade, bare wire, Micro USB, Type-C |
| Wire Length | 50mm | 20mm ~ 500mm, any length |
| Wire Gauge | AWG 24 | AWG 22 ~ 28 |
| PCB Protection | 4-function (OV/UV/SC/OT) | Custom thresholds, fuel gauge IC, 1S2P / 2S1P configuration |
| Cell Matching | Standard batch | Matched pairs (identical IR ± 2mΩ) for series/parallel builds |
| Label / Branding | ASOL label | Your logo, barcode, SKU, certifications |
| Packaging | Bulk tray | Blister card, branded box, polybag, retail-ready |
| Certification | CE / RoHS / UN38.3 / UL1642 | IEC62133, KC (Korea), PSE (Japan), BIS (India) — upon request |
| Sample Orders | 1~10 units | Ships in 48h via DHL / FedEx / UPS |
| Bulk MOQ | 100 units | Flexible pricing tiers at 100 / 500 / 2,000 / 10,000+ |
| Lead Time | 7~15 days (bulk) | 15~25 days (custom spec) |
Ordering & Contact
| Channel | Details |
|---|---|
| info@asol-battery.com | |
| +86 157 7985 8703 | |
| Website | www.asol-battery.com |
| Response Time | Within 24 business hours |
