OEM 443441 3.7V 650mAh Lithium Polymer Battery with 500 Cycles Life for Electric Toothbrushes
Price:
Negotiable
MOQ:
100pcs
Delivery Time:
7-10days
Brand:
RESKY
Product Description
OEM Lithium Cell 443441 3.7V 650mAh 2.4Wh Rechargeable Li-polymer Battery For Electric Toothbrushes
High-performance LiPo battery designed specifically for smart watches and compact electronic devices.
Product Specifications
| Attribute | Value |
|---|---|
| Nominal Capacity | 650mAh |
| Charging Current | 0.2C |
| Continuous Discharging Current | 0.5C |
| Max Discharging Current | 1C |
| Weight | 10g |
| Cycle Life | 500 cycles |
| Warranty | 12 months |
| Shipping | UPS, DHL, FedEx, TNT, by Air, by Sea, Special Line |
| Connector | JST, Molex |
| Specification | 4.4*34*41mm |
Technical Specifications
| Item | Specification |
|---|---|
| Battery Type | 3.7V 650mAh LiPo Battery |
| Charge Voltage | 4.2V |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 650mAh @ 0.2C Discharge |
| Charge Current | Standard: 0.5C, Rapid: 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, Rapid: 2 hours |
| 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 |
| Dimensions | Length: 41±2mm, Width: 34±0.5mm, Thickness: 4.4±0.2mm |
| Drop Test | Dropped from 1m twice onto concrete - no fire, no leakage |
| Cycle Life | ≥500 times |
Voltage Comparison: 3.7V vs 3.8V Batteries
3.7V Lithium Battery
Nominal discharge platform voltage is 3.7V, full charge voltage typically 4.2V, discharge cutoff voltage generally 3.0V.
3.8V Lithium Battery
Nominal discharge platform voltage is 3.8V, with some models reaching full charge voltage of 4.35V. Discharge cutoff voltage mostly set at 3.0V or slightly higher.
Energy Density
3.8V batteries typically use advanced cathode materials, allowing them to store more energy in the same volume or weight, resulting in higher energy density.
Cost & Safety
3.8V batteries are more expensive due to complex materials and processes. 3.7V batteries are technologically mature with lower costs and easier safety assurance.
Applications
- Smart Wearables: smart watches, fitness trackers, health monitors
- Portable Audio: Bluetooth earphones, mini speakers, headset charging cases
- Personal Care: electric toothbrushes, facial tools, mini massagers
- Smart Devices: remote controls, electronic toys, LED lights, tracking devices
- Home & Security: smart doorbells, wireless sensors, small surveillance gadgets
- Industrial & Medical: portable testers, small medical devices, handheld instruments
Quality Assurance
A-Grade Battery Cells
High-quality materials, sufficient capacity, long battery life, safe and non-explosive
High-Performance Protection Board
Stable voltage output, prevents overcharging, over-discharging, and short circuit
International Standard Lead Wire
High-quality wire with strong conductivity, supports high-probability discharge
Wide Nickel Tabs
Excellent thermal and electrical conductivity, reduces heat generation, ensures stable current output
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