Product Description
Lithium Polymer Lipo Batteries LP502545 3.7V 600mAh 2.22wh Rechargeable Li-Polymer Batteries
| 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 | 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: 45±2mm (not including tabs)
Width: 25±0.5mm
Thickness:5±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 |
Advantages:
Advantages: Lightweight, Thin, and Stable Features Suitable for Small Devices
The advantages of this battery specification revolve around its "miniaturization, low capacity, and soft-pack design," making it a perfect fit for applications requiring high space, weight, and safety. These advantages can be categorized into five key aspects:
1. Flexible Size: Thin and customizable, suitable for compact spaces
Measuring only 5.0mm thick, 25mm wide, and 45mm long, this ultra-thin, flat design can be easily embedded in space-constrained devices such as mobile phones, smart wearables, and small sensors (e.g., inside the dial of a smartwatch or in the charging case of a Bluetooth headset).
As a soft-pack lithium polymer battery, its outer shell is made of aluminum-plastic film (not a rigid metal shell), allowing for a certain degree of shape adjustment (e.g., slight bending to fit curved devices). This makes it easier to fit within device structures than similarly sized cylindrical lithium batteries (e.g., 18650). 2. Lightweight: Reduces the overall burden on devices.
Lithium polymer batteries offer a higher energy density (volume energy density approximately 300-400Wh/L, gravimetric energy density approximately 100-150Wh/kg) than traditional nickel-metal hydride batteries, and their soft-pack design eliminates the added weight of a metal casing.
A single battery of this specification typically weighs only 8-12g, making it crucial for lightweight devices (such as smart bracelets and children's smartwatches), preventing excessive battery weight from impacting the wearer's experience.
3. Excellent Safety: Reduces the Risk of Leakage and Explosion
The core advantage of the soft-pack design is its high safety margin. When gas is generated within the battery due to overcharging or a short circuit, the aluminum-plastic film bulges to release pressure, rather than exploding like cylindrical or prismatic hard-shell batteries. Even if damaged, leakage will only occur slowly (the gel-like electrolyte eliminates the risk of liquid electrolyte splashing). The 3.7V nominal voltage is a "single-cell low-voltage lithium battery," eliminating the need for multiple cells in series (avoiding the risk of voltage imbalance caused by series connection). This simplifies circuit design and further reduces device safety risks.
4. Stable Discharge: Suitable for the continuous needs of low-power devices.
Although the 600mAh capacity isn't high, the battery offers a gentle discharge curve: within the 3.0-4.2V operating range, the voltage drops slowly, providing stable current output for devices (for example, a smart wristband draws only a few mA in standby mode; this battery ensures continuous power supply), preventing device lags and shutdowns caused by voltage fluctuations.
It supports "low-current, long-term discharge" (discharge rates typically range from 0.2C to 1C, or 120mA to 600mA), with a cycle life of 300-500 cycles (based on the standard "charge to 4.2V, discharge to 3.0V"), meeting the 1-2 year usage requirements of most small devices.
5. No Memory Effect: More Convenient to Use
Lithium polymer batteries do not require a full charge and discharge cycle to maintain capacity like traditional nickel-cadmium batteries. They can be recharged at any time (for example, a smartwatch can be taken off during the day and charged for an hour, then used again at night). Capacity degradation due to partially discharged batteries is avoided, significantly improving user convenience.
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