3.7V 55mAh Small Lithium Polymer Battery 401120 Li Poly Battery For Small Smart Led Light
3.7V 55mAh Small Lithium Polymer Battery 401120 Li Poly Battery for Small Smart Led Light
Li Poly Battery 401120 Description
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Battery Type: Rechargeable Lithium Polymer Battery Configuration: 1S1P Part Number: 401120 Nominal Capacity: 55mAh Nominal Voltage: 3.7V Weight: appr. 1.0g Protection Circuit(PCM): Yes Thermistor(NTC): No(Available) Lead wires: UL1571-AWG#28, length: TBD Connector: No(Avialable) Pack size Max.: 4.5x11.5x 22.5mm (T*W*L) Certificates and Reports: UN38.3, MSDS ![]() |
| Item | Description | Dimension | |
| T | Battery pack Thickness max. | Initial | 4.5mm |
| After 300 Cycles | 4.9mm | ||
| W | Battery Pack Width max. | 11.5mm | |
| H | Battery Pack Height max. | 22.5mm | |
| A | Wire Length | TBD | |
| Connector | No(Avialable) | ||
| Battery Pack Impedance | ≤ 500mΩ | ||
| Item | Parameter | |
| Battery Model | 401120 | |
| Design Scheme | DW01+8205(Replaceable) | |
| Nominal Voltage | 3.7V | |
| Nominal Capacity | 55mAh(0.2C discharge) | |
| Typical Capacity | 58mAh(0.2C discharge) | |
| Min Capacity | 55mAh(0.2C discharge) | |
| Charging Voltage | 4.2V | |
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Discharging cut-off Voltage |
2.75V | |
| Standard Charging Current | 0.2C | |
| Rapid Charging Current | 1.0C | |
| Standard Discharging Current | 0.2C | |
| Rapid Charging Current | 1.0C | |
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Cell Weight |
Appr: 1.0g | |
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Shipment Voltage |
≥3.8V | |
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Cell Impedance |
≤400mΩ | |
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Operating Temperature |
Charging: 0°C ~ 45°C |
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Discharging: -20°C ~60°C |
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Visual Inspection |
Do not appear such as tear, corrosion, deformation, gas bulge, leakage and other harmful phenomena that damage commercial value. | |
Li Poly Battery Certificates and Reports
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Li Poly Battery Applications
Li Poly Battery Packaging and Delivery
Precautions for Use
1. Charging: Use a charger designed for polymer lithium batteries. Avoid overcharging.
2. Discharging: Prevent deep discharge by avoiding extremely low voltage levels. Most polymer lithium batteries have built-in protection circuits.
3. Temperature: Operate within the recommended temperature range provided by the manufacturer. Avoid exposing to extreme temperatures.
4. Physical Handling: Handle with care to avoid damage or leakage. Avoid impacts, punctures, or bending.
5. Compatibility: Ensure compatibility with your device in terms of voltage, capacity, and size.
6. Storage: Store in a cool, dry place away from direct sunlight. Avoid storing at full charge or completely discharged.
7. Transportation: Comply with transportation regulations and guidelines.
8. Disposal: Dispose of properly. Recycle at designated facilities or follow local regulations.
After-sales Service
1. After-sales warranty:
- According to the contract, we provide a certain warranty period for the exported lithium polymer batteries.
- During the warranty period, if the product has quality problems under normal use conditions, we will provide replacement or return service according to the after-sales policy.
2. Product quality assurance:
- We guarantee that the exported lithium polymer batteries comply with international quality standards and regulations, and undergo strict quality control and testing to ensure their performance and reliability.
- If you find product quality problems under normal use conditions, please contact us within the contractual warranty period, we will actively deal with it and provide solutions.
3. Problem solving:
- If you encounter any problems or have any complaints during the after-sales service, please contact our customer service team in time.
- We will be happy to provide you with support and actively seek solutions to your problems to ensure your satisfaction and good cooperative relationship.
Our Advantages
◆ Over 10 years of li-polymer battery manufacture & export experience
◆ Professional R&D team supporting
◆ Excellent quality, advanced equipment and competitive prices
◆ Good package, cheap freight cost, faster delivery, best after-sales service
◆ OEM / ODM are welcome, we can customize different size to meet customer's requirements
◆ Long life cycle of charging & discharging
The size of rechargeable lipo battery can be customized. We have advantage making special Li-Po battery such as extremely thin Li-Po battery , curved battery, high temperature Li-Po battery, low temperature Li-Po battery and special shape Li-Po battery (round)
***Please contact us to get more detailed information and free samples***
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.






