3.7V 500mAh Rechargeable Li-polymer Battery Cell 502248 for Handheld Instruments
| NO. | Items | Specifications |
|---|---|---|
| 1 | Batteries | 3.7V 500mAh LiPo battery |
| 2 | Charge voltage | 4.2V |
| 3 | Nominal voltage | 3.7V |
| 4 | Nominal capacity | 500mAh @ 0.2C Discharge |
| 5 | Charge current | Standard Charging: 0.2C Rapid charge: 1.0C |
| 6 | Standard Charging method | 0.5C CC charge to 4.2V, then CV charge till current ≤0.05C |
| 7 | Charging time | Standard: 2.75 hours Rapid charge: 2 hours |
| 8 | Max. charge current | 0.5C |
| 9 | Max. discharge current | 1.0C |
| 10 | Discharge cut-off voltage | 2.5V±0.25V (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±0.5mm Width: 22±0.5mm Thickness: 5±0.2mm |
| 14 | Drop Test | Dropped from 1m height twice onto concrete ground (no fire, no leakage) |
| 15 | Cycle time | ≥500 times |
3.7V Lithium Battery: The nominal discharge platform voltage is 3.7V, the full charge voltage is typically 4.2V, and the discharge cutoff voltage is generally 3.0V.
3.8V Lithium Battery: The nominal discharge platform voltage is 3.8V, with some models reaching a full charge voltage of 4.35V. The discharge cutoff voltage is still mostly set at 3.0V or slightly higher.
3.8V batteries typically use advanced cathode materials such as high-nickel ternary lithium batteries, allowing them to store more energy in the same volume or weight, resulting in higher energy density. They are suitable for devices with high battery life requirements.
3.8V Batteries: Due to more complex materials and processes (such as high-voltage electrolytes and precision BMS), they are more expensive; at the same time, due to higher operating voltages, they have a slightly higher risk of thermal runaway and require more stringent battery management systems (BMS).
3.7V Batteries: These are technologically mature, have lower costs, and offer relatively easier safety assurance, making them suitable for mass-market products.
- Bluetooth earphones
- Smart wearables
- GPS navigation devices
- POS machines
- Power banks
- Learning devices
- Tablets
- Car navigation systems
- MP3/MP4/MP5 players
- Card insertion speakers
- Wireless mice
- Xiaomi display screen PSP built-in battery
- Apple peripheral power supply
- Mobile DVD players
- Laptop batteries
- Wireless monitoring devices
- Medical equipment
- Various instruments and meters
- LED lamps
- Traffic signs
- Portable small appliances
- Various DIY instruments
- Metal detectors
- Other digital battery products
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