402035 3.7V 250mAh Li-ion Battery Cell Rechargeable Lithium Polymer Battery for Voice Recorder
Price:
Negotiable
MOQ:
500pcs
Delivery Time:
7-10days
Brand:
RESKY
Product Description
Li-ion Battery Cell 402035 3.7V 250mAh 0.93wh Rechargeable Lithium Polymer Battery
Compact 3.7V 250mAh lithium polymer battery designed for voice recorders and other portable electronic devices, featuring high energy density and reliable performance.
Product Specifications
| Item | Specifications |
|---|---|
| Batteries | 3.7V 250mAh LiPo battery |
| Charge voltage | 4.2V |
| Nominal voltage | 3.7V |
| Nominal capacity | 250mAh @ 0.2C Discharge |
| Charge current | Standard Charging: 0.5C Rapid charge: 1.0C |
| Standard Charging method | 0.5C CC charge to 4.2V, then CV charge till current ≤0.05C |
| Charging time | Standard: 2.75 hours (Ref.) Rapid: 2 hours (Ref.) |
| Max. charge current | 1.0C |
| Max. discharge current | 1.0C |
| Discharge cut-off voltage | 2.75V (0.2C) |
| Operating temperature | Charging: 0°C ~45°C Discharging: 0°C ~45°C |
| Storage temperature | -10°C ~ +45°C |
| Dimension | Length: 35±2mm Width: 20±0.5mm Thickness: 4±0.2mm |
| Drop Test | 1m drop onto concrete twice. No fire, no leakage |
| Cycle time | ≥500 cycles |
Key Features
- Ultra-Compact & Lightweight Design: Slim soft-pack structure with only 4mm thickness and approximately 5g weight, ideal for miniaturized portable devices.
- High Safety & Stable Performance: Aluminum-plastic film soft package eliminates leakage risk with built-in PCM protection for over-charge, over-discharge, over-current and short-circuit protection.
- High Energy Density & Reliable Output: 3.7V rated voltage and 250mAh capacity provide stable, long-lasting power with higher energy density than same-size cylindrical batteries.
- Low Self-Discharge & Long Cycle Life: Less than 3% self-discharge rate per month with over 500 cycles and capacity retention above 80%.
- No Memory Effect & Flexible Charging: Supports charging at any power level without memory effect, compatible with standard 4.2V charging.
- Wide Temperature Adaptability: Operating temperature range of charging 0~45℃ and discharging -20~60℃ for stable performance in various environments.
- Customizable & OEM/ODM Supported: Accepts customization on terminals, protection boards, and labeling with stable quality and fast delivery.
Main Applications
- Smart Wearable Devices: Smart bracelets, GPS watches, motion trackers with 1-2 days of low-power use
- Miniature Digital Devices: Bluetooth headsets, voice recorders, MP3 players, cameras with 3-6 hours of use
- IoT Terminals: Wireless sensors, RFID tags, data collectors with long standby times
- Medical Devices: Blood glucose meters, pulse oximeters, massagers with stable discharge
- Toys and Models: Remote control cars, drones, robots with compact size and low-rate discharge
- Backup Power: Auxiliary power for smart door locks, emergency power for small devices
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