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551145 3.7V 250mAh LiPo Battery
$2.65
Model 551145 3.7V 250mAhlithium polymer battery. High energy density with built-in BMS protection. Ideal for portable electronics, wearables and IoT devices. Custom sizes available. HNF Battery manufacturer.
Overview
The 551145 3.7V 250mAh Lithium Polymer Pouch Battery is a compact, lightweight, and high-performance rechargeable cell engineered for space-constrained wireless and portable electronic devices. With its slim soft-pack aluminum laminate structure, it delivers superior energy density while conforming to custom form factors required by OEM/ODM clients.
⚡ Key Specifications
| Parameter | Value |
|---|---|
| Model | 551145 |
| Nominal Voltage | 3.7V |
| Capacity | 250mAh |
| Watt-Hour Rating | 0.925Wh |
| Dimensions | 5.5 × 11 × 45 mm |
| Cell Type | Lithium Polymer (LiPo) Pouch |
| Charge Voltage | 4.2V |
| Charge Temperature | 0°C ~ 45°C |
| Discharge Temperature | -20°C ~ 60°C |
| Cycle Life | ≥500 cycles (80% capacity retention) |
| Weight | Approx. 5.0g |
| Connector | Customizable (JST / Molex / bare leads) |
| Certification | UN38.3 / CE / RoHS / MSDS |
✅ Product Highlights
1. Ultra-Slim Custom Shape Design The soft aluminum laminate pouch structure allows the battery to be shaped and sized to your exact device requirements — ideal for irregularly shaped enclosures found in wearables, medical devices, and smart cards.
2. Stable & Safe Power Output Built-in PCM (Protection Circuit Module) guards against over-charge, over-discharge, over-current, and short-circuit, ensuring reliable performance and extended battery lifespan.
3. High Energy Density Achieves up to 650 Wh/L volumetric energy density, delivering more power per gram and per cubic centimeter than conventional cylindrical cells of similar weight.
4. Wide Operating Temperature Performs reliably from -20°C to 60°C, making it suitable for both indoor consumer electronics and outdoor/industrial IoT deployments.
5. OEM & ODM Friendly Flexible customization options including custom dimensions, connector types, wire length/color, PCM configuration, and labeling. Samples available within 3–12 business days.
🎯 Applications
- ⌚ Smartwatches & Fitness Trackers — compact size fits slim wearable casings
- 🎧 Wireless Earbuds & Bluetooth Devices — lightweight with stable 3.7V output
- 🏠 IoT Sensors & Smart Home Devices — long cycle life reduces maintenance cost
- 🩺 Portable Medical Equipment — stable discharge for monitoring devices
- 📡 Remote Controllers & GPS Trackers — reliable power in compact form
- 🔌 Digital Beauty Devices & Handheld Electronics — custom shape compatibility
🔧 Customization Options
| Item | Options |
|---|---|
| Capacity | 100mAh – 5000mAh |
| Voltage | 3.7V / 7.4V / 11.1V (multi-cell packs) |
| Dimensions | Fully customizable (thickness, width, length) |
| Connector | JST-PH 2.0 / Molex / Bare wire / Custom |
| PCM/BMS | Standard or custom protection circuit |
| Certifications | UN38.3, IEC62133, CE, UL available |
📦 MOQ & Lead Time
| Order Type | Details |
|---|---|
| Sample MOQ | 10–100 pcs |
| Bulk MOQ | 500–1,000 pcs (negotiable) |
| Sample Lead Time | 3–12 business days |
| Mass Production | 15–30 business days |
⚠️ Safety & Compliance
This battery complies with UN38.3 transportation standards and passes rigorous safety testing including nail penetration, crush, short circuit, and thermal stability tests. Do not expose to temperatures above 130°C or subject to mechanical shock.
📩 Contact us for custom specifications, datasheet, or bulk pricing. OEM/ODM orders welcome. One-year limited warranty from shipment date.
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