NO. | Items | Specifications |
1 | batteries | 3.7v 3400mah lipo battery |
2 | Charge voltage | 4.2V |
3 | Nominal voltage | 3.7V |
4 | Nominal capacity | 3400mAh 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 | 1.0C |
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:65±2mm (not including tabs) Width:45±0.5mm Thickness:8.5±0.5mm |
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 |
Safety features:
Energy Density and Lightweight Design:
Lithium polymer batteries pack more capacity (mAh) into less space, resulting in lighter battery packs. This is particularly beneficial in applications where weight is a critical factor, such as in drones, model aircraft, and portable electronics.
Dual IC Protection:
Many lithium polymer batteries are equipped with dual IC (Integrated Circuit) protection. This feature ensures safe charging and discharging by monitoring and regulating the battery's voltage and current. It helps prevent overcharging, over-discharging, short-circuiting, and other potential hazards.
Separator Adhesion:
In some advanced lithium polymer battery designs, the separator—a thin membrane that separates the positive and negative electrodes—adheres to the outer surface of the outermost electrode. This design helps prevent internal shorts that can occur when an electrode comes into contact with an electrode lead upon falling or other physical impacts.
Temperature Management:
Lithium polymer batteries are sensitive to temperature. To ensure safety, they are designed with features that help manage temperature. This includes materials and designs that can withstand high temperatures and prevent thermal runaway, which could lead to a fire or explosion.
Overcharge and Over-discharge Protection:
Lithium polymer batteries often incorporate circuits that provide overcharge and over-discharge protection. These circuits monitor the battery's state of charge and disconnect the battery from the power source or load if it detects unsafe conditions.
Short-Circuit Protection:
Short-circuit protection is another critical safety feature of lithium polymer batteries. The battery's design and materials are chosen to minimize the risk of short circuits, and some batteries include additional features such as fuse links or current-limiting devices that will disconnect the battery if a short circuit occurs.
Certification and Standards Compliance:
Lithium polymer batteries are typically certified to meet various international safety standards, such as those set by the International Electrotechnical Commission (IEC) or Underwriters Laboratories (UL). These certifications ensure that the batteries have been tested and found to meet strict safety requirements.
Storage and Transportation Safety:
Lithium polymer batteries should be stored and transported in a way that minimizes the risk of hazards. This includes storing them in a cool, dry place and ensuring they are not exposed to extreme temperatures or mechanical shock. Additionally, many countries have regulations governing the transportation of lithium batteries, which should be followed to ensure safety.
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