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902990 3.7V 3000mAh LiPo Battery
$2.80
Model 902990 3.7V 3000mAhlithium polymer battery. High energy density with built-in BMS protection. Ideal for portable electronics, wearables and IoT devices. Custom sizes available. HNF Battery manufacturer.
🔋 902990 LiPo Battery — 3.7V 3000mAh High Capacity Rechargeable Lithium Polymer Battery
Overview
The 902990 lithium polymer battery delivers a high-capacity 3.7V / 3000mAh (11.1Wh) in a slim 9.0 × 29 × 90mm flat-cell form factor. Its generous energy capacity combined with a low-profile design makes it the go-to power solution for tablets, portable monitors, smart speakers, POS terminals, and mid-size consumer electronics that demand extended runtime without adding weight or bulk. CE and UN38.3 certified, with full OEM/ODM customization available from connector to branding.
Key Specifications
| Parameter | Specification |
|---|---|
| Model | 902990 |
| Configuration | 1S1P |
| Nominal Voltage | 3.7V |
| Capacity | 3000mAh |
| Energy | 11.1Wh |
| Dimensions | 9.0 × 29 × 90 mm |
| Weight | ≈ 58g |
| Charge Voltage | 4.2V |
| Max Charge Current | 1.5A (0.5C) |
| Continuous Discharge | 3A (1C) |
| Peak Discharge | 6A (2C) |
| Discharge Cut-off | 3.0V |
| Self-discharge Rate | ≤ 3% / month |
| Cycle Life | ≥ 500 cycles |
| Operating Temp | -20°C ~ 60°C |
| Storage Temp | -10°C ~ 45°C |
| Wire Leads | 100mm AWG26 (customizable) |
| Connector | JST-PH 2Pin (customizable) |
| Certification | CE / UN38.3 / RoHS |
902990 vs Similar High-Capacity Models
| Model | Voltage | Capacity | Dimensions (mm) | Energy | Best For |
|---|---|---|---|---|---|
| 805060 | 3.7V | 3000mAh | 8.0×50×60 | 11.1Wh | Square compact layout |
| 902990 ⭐ | 3.7V | 3000mAh | 9.0×29×90 | 11.1Wh | Long narrow enclosures |
| 756470 | 3.7V | 6000mAh | 7.5×64×70 | 22.2Wh | Large tablets |
| 766065 | 3.85V | 5000mAh | 7.6×60×65 | 19.25Wh | Premium HV tablets |
| 954565 | 3.7V | 2000mAh | 9.5×45×65 | 7.4Wh | Mid-size handhelds |
📌 902990 unique advantage: The narrow 29mm width and 90mm length suits long-profile enclosures such as smart speakers, stick-form handhelds, and slim reading devices where wider cells won’t fit.
Features
- ✅ High capacity 3000mAh — extended runtime for power-hungry smart devices
- ✅ Long narrow form factor — 9.0 × 29 × 90mm fits slim speaker and reader chassis
- ✅ Integrated PCM protection — overcharge, over-discharge, overcurrent & short-circuit
- ✅ Low self-discharge — ≤3%/month, ideal for standby-heavy smart home devices
- ✅ Stable flat discharge curve — consistent 3.7V output across full capacity range
- ✅ ≥ 500 cycle life — 3+ years of daily charge cycles
- ✅ CE & UN38.3 certified — EU compliant, global freight ready
- ✅ In stock — standard models dispatched within 3 business days
- ✅ Full OEM/ODM support — custom dimensions, connector, wire harness & branding
Applications
| Industry | Typical Devices |
|---|---|
| 🔊 Audio & Smart Home | Smart speakers, soundbars, voice assistants, home hubs |
| 🖥️ Consumer Electronics | Portable monitors, tablets, e-readers, digital photo frames |
| 🏪 Retail & Payments | POS terminals, handheld barcode scanners, receipt printers |
| 🏥 Medical | Portable infusion pumps, bedside monitors, handheld diagnostics |
| 🏭 Industrial | Mobile data terminals, rugged handhelds, field inspection tools |
| 💡 Energy & Backup | Solar-powered lights, emergency backup modules, UPS units |
| 🔒 Security | Wireless NVR cameras, video doorbells, smart access panels |
PCM Protection Details
| Protection | Trigger Threshold | Function |
|---|---|---|
| ⚡ Overcharge | Cutoff at 4.25V | Prevents swelling & thermal runaway |
| 🔋 Over-discharge | Cutoff at 2.75V | Preserves long-term cycle life |
| 🔥 Overcurrent | Trips at >6A | Prevents PCB & device damage |
| ⚠️ Short-circuit | Instant cutoff | Protects user & device safety |
| 🌡️ Thermal range | -20°C ~ 60°C | Stable in home & field environments |
Default Package Configuration
| Item | Specification |
|---|---|
| LiPo cell | 902990 3.7V 3000mAh |
| PCM protection board | ✅ Included |
| Wire leads | 100mm AWG26 red & black |
| Connector | JST-PH 2Pin |
| Label | Standard / OEM white-label available |
OEM / Custom Options
| Option | Details |
|---|---|
| Voltage | 3.7V / 3.85V HV / 7.4V / 11.1V |
| Capacity | 1000mAh – 8000mAh |
| Dimensions | Custom length / width to your drawing |
| Wire length & gauge | 50mm ~ 300mm / AWG20 ~ AWG28 |
| Connector | JST-PH / SH / ZH / Molex / XT30 / bare wire |
| Protection circuit | Standard PCM / Smart BMS / Fuel gauge IC |
| Certification | CE, UN38.3, RoHS, UL, KC on request |
| Branding | OEM / white-label labeling & retail packaging |
| MOQ | 50 pcs |
Certification & Compliance
| Certificate | Scope | Status |
|---|---|---|
| ✅ CE | EU market compliance | Standard |
| ✅ UN38.3 | Global air & sea freight | Standard |
| ✅ RoHS | Hazardous substance compliance | Standard |
| ✅ MSDS | Material safety data sheet | Standard |
| 📋 UL | US market | On request |
| 📋 KC | Korea market | On request |
Why Choose Us?
- 🏭 Factory Direct — own production lines, zero intermediaries, best factory price
- 📐 Unique form factor expertise — long narrow cells (902990 type) are our specialty
- 🔬 In-house R&D — custom dimension prototyping in 7 days
- 📋 CE + UN38.3 ready — full documentation for customs & compliance
- 📦 In stock — standard models ship within 3 business days
- 🚢 DG logistics expertise — lithium battery air, sea & express shipping worldwide
- 🛠️ Full OEM service — from spec drawing to mass production
📩 Send us your enclosure dimensions — we’ll engineer the perfect battery fit within 24 hours.
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