Product Description
Rechargeable Li-Polymer Battery 403048 3.7V 600mAh 2.22wh Lithium Cell For Wareable Device
| NO. | Items | Specifications |
| 1 | batteries | 3.7v 600mah lipo battery |
| 2 | Charge voltage | 4.2V |
| 3 | Nominal voltage | 3.7V |
| 4 | Nominal capacity | 600mAh 0.2C Discharge |
| 5 | Charge current
| Standard Charging:0.5C
Rapid charge: 1.0C |
| 6 | Standard Charging method | 0.5C CC(constant current)charge to 4.2V, then CV(constant voltage 4.2V)charge till charge current decline to ≤0.05C |
| 7 | Charging time
| Standard Charging:2.75hours(Ref.)
Rapid charge: 2hours(Ref.) |
| 8 | Max.charge current | 0.5C |
| 9 | Max.discharge current | 1.0C |
| 10 | Discharge cut-off voltage | 2.5V0.25V(0.2C) |
| 11 | Operating temperature | Charging: 0 °C ~45 °C
Discharging:0 °C ~45 °C |
| 12 | Storage temperature | -10°C~ +45 °C |
| 13 | Dimension | Length: 48±2mm (not including tabs)
Width: 30±0.5mm
Thickness:4±0.2mm |
| 14 | Drop Test | The cell is to be dropped from a height of meter twice onto concrete ground. No fire, no leakage |
| 15 | cycle time | ≥500times |
Application:
MP3/MP4 player: As a mainstream portable device battery, it provides long-term battery life support.
GPS tracker: Used for outdoor positioning equipment, requiring stable power supply performance.
Bluetooth headset/speaker: Adapt to wireless devices, emphasizing lightweight and long battery life.
Storage precautions for lithium polymer batteries:
Temperature and humidity: The ideal storage temperature is 15-25℃. Avoid high temperature (＞35℃) or humid environment. High temperature will accelerate battery aging, and humidity may cause short circuit or corrosion.
Power management: It is recommended to keep the power at 50% for long-term storage, and avoid full charge or over discharge. Regular charge and discharge cycles can maintain battery health.
Isolation and protection: Keep away from fire and flammable materials. Use fireproof containers or fireproof bags when storing, and ensure good ventilation.
Production steps for lithium polymer battery cell:
Positive electrode material preparation:
Using ternary materials (composite oxides of nickel, cobalt and manganese) as active materials, positive electrode plates are made through stirring, coating and other processes.
Negative electrode materials: Carbon materials such as graphite are usually used, and negative electrode plates are made through coating and rolling.
Electrolyte: It is a mixture of lithium salt (such as lithium hexafluorophosphate) and organic solvent, which directly affects the performance of the battery.
Key production steps:
Slurry preparation: The positive and negative active materials are mixed with the binder to form a uniform slurry, which is then coated on metal foil (such as copper foil or aluminum foil) after being stirred by a vacuum mixer without bubbles.
Pole plate processing: The coated pole plates are dried, rolled (densified) and cut to form pole plates of specific sizes.
Battery assembly: The positive and negative pole plates, separators, etc. are assembled into a battery cell and injected with electrolyte.
Formation and testing: Activate battery performance through charge and discharge cycles and screen out unqualified products
Pictures:
