The FYW 502540 is a compact, rechargeable lithium polymer (LiPo) pouch cell engineered for OEM/ODM projects that demand thin, light and reliable power. With a nominal voltage of 3.7V, a true capacity of 500mAh and an energy rating of 1.85Wh, it delivers stable, consistent output for space-constrained electronic products. The prismatic pouch format (MAX 5.0 × 25.0 × 40.0 mm) allows designers to fit dependable energy storage into slim enclosures where cylindrical cells cannot go.
Manufactured in Shenzhen under strict quality control, every cell is fully tested and shipped with MSDS and KC certification, giving global buyers a compliant, ready-to-import power solution. Whether you are sourcing for wearables, Bluetooth audio, IoT sensors or portable medical gear, this cell offers an excellent balance of energy density, safety and cost.
| Parameter | Specification |
|---|---|
| Battery Type | Rechargeable Lithium Polymer (LiPo) Pouch Cell |
| Model / Cell Size Code | 502540 (5.0 × 25 × 40 mm) |
| Nominal Voltage | 3.7V |
| Typical Capacity | 500mAh |
| Rated Energy | 1.85Wh |
| Cell Dimensions | MAX 5.0 (T) × 25.0 (W) × 40.0 (L) mm |
| Charge Voltage | 4.2V ± 0.05V |
| Discharge Cut-off Voltage | 3.0V |
| Standard Charge Current | 0.5C (250mA) |
| Max Charge Current | 1.0C (500mA) |
| Max Discharging Current | 1.0C (500mA) |
| Internal Impedance | ≤ 120mΩ |
| Cycle Life | 300–500 cycles (capacity ≥ 80%) |
| Operating Temperature | Charge 0–45 °C / Discharge −20–60 °C |
| Storage Temperature | −20–45 °C |
| Approx. Weight | ~9.5 g |
| Protection Circuit (PCM) | Optional (over-charge / over-discharge / over-current / short-circuit) |
| Short Circuit Protection | Yes |
| Connector / Wire | Customizable (JST, Molex, solder tabs, etc.) |
| Certification | MSDS, KC (CE / RoHS on request) |
| OEM / ODM | Supported — size, capacity, label and PCM customization |
| Shipping | UPS / TNT / FedEx / DHL (UN38.3 & MSDS documents provided) |
Wearable electronics (smart watches, fitness bands, health monitors), Bluetooth headsets and speakers, IoT sensors and smart-home nodes, portable medical devices, GPS trackers, remote controls and other compact, rechargeable battery-powered products.
FYW supplies customized LiPo pouch cells built to your exact requirements. Tell us your target capacity, dimensions, PCM/BMS needs, connector type and labeling, and our engineering team will provide a matched sample for evaluation. Private-label and OEM programs are welcome.
Ready to power your next product? Contact our sales team for samples, datasheets and a bulk quotation today.