Lithium Ion Cell 402050 3.7V 400mAh 1.48wh Rechargeable Li-polymer Lipo Battery Cells
Price:
Negotiable
MOQ:
100pcs
Delivery Time:
7-10days
Brand:
RESKY
Product Description
Lithium Ion Cell 402050 3.7V 400mAh Rechargeable Battery
High-performance 3.7V 400mAh 1.48Wh rechargeable Li-polymer battery cell designed for compact electronic devices requiring reliable power in limited space.
Technical Specifications
| Parameter | Specification |
|---|---|
| Battery Type | 3.7V 400mAh Li-polymer |
| Charge Voltage | 4.2V |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 400mAh (0.2C Discharge) |
| Charge Current | Standard: 0.5C (200mA) Rapid: 1.0C (400mA) |
| Charging Method | 0.5C CC to 4.2V, then CV until current ≤0.05C |
| Charging Time | Standard: ~2.75 hours Rapid: ~2 hours |
| Max Charge Current | 1.0C (400mA) |
| Max Discharge Current | 1.0C (400mA) |
| Discharge Cut-off Voltage | 2.55V ±0.25V (0.2C) |
| Operating Temperature | Charging: 0°C to 45°C Discharging: 0°C to 45°C Storage: -10°C to 45°C |
| Dimensions | Length: 50±2mm Width: 20±0.5mm Thickness: 4±0.2mm |
| Cycle Life | ≥500 cycles |
Structural & Safety Features
- Electrode System: NCM/NCA ternary cathode material with graphite anode
- Packaging: Aluminum-plastic composite film soft-pack with flexibility (bending radius ≥5mm)
- Electrolyte: Polymer gel electrolyte with superior thermal stability and no leakage risk
- Safety Protection: Built-in PCM module for overcharge, over-discharge, overcurrent, and short circuit protection
- Drop Test Certified: Withstands 1-meter drops onto concrete without fire or leakage
Primary Applications
Smart Wearables & Children's Products
- Entry-level smart bracelets and watches (1-3 day battery life)
- Children's phone watches, smart toy watches, GPS bracelets
- Mini heart rate monitors, pedometers, cycling speed sensors
Medical & Health Equipment
- Portable diagnostic devices: electronic thermometers, oximeters, blood pressure monitors
- Rehabilitation aids: mini massagers, physiotherapy devices, hearing aids
IoT & Smart Home Devices
- Low-power sensors: temperature/humidity, door/window, smoke detectors
- Small smart home devices: smart door locks, mini cameras, wireless remotes
Product Images
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Shenzhen Resky Electronics Co., Ltd.
Location
Room 1405-1, Building 3B, Huaqiang Idea Park, Guangming Street, Guangming District, Shenzhen, Guangdong Province,China
Contact Person
Alice