The 502025 lithium polymer battery packs efficient 210mAh capacity into an ultra-slim, low-profile design—just 5.0mm thick. Ideal for lightweight, handheld, and mobile devices, it strikes a perfect balance between compact size and dependable runtime. Common applications include wearable sensors, digital styluses, voice recorders, and compact controllers—enabling next-generation portability with reliable power delivery.
| Feature | Specification |
| Rated Capacity | 210mAh, 0.2C discharging |
| Normal Voltage | 3.7V |
| O.C.V | 3.80 – 4.2V |
| Charge Ending Voltage | 4.20 ± 0.03V |
| Discharge Ending Voltage | 3.0V |
| Standard Charging Method | 0°C ~ 45°C, 0.5C constant current to 4.2V, then constant voltage till current < 0.01C |
| Charge Current | Standard: 0.2C |
| Rapid: 1.0C | |
| Charging Time | Standard: 5.5 – 6.5 h |
| Rapid: 1.5 – 2.5 h | |
| Max. Charging Current | 1.0C (5°C ~ 45°C) |
| Standard Discharging Current | 0.2C, constant current to 3.0V |
| Max. Discharging Current | 1C (–20°C ~ +60°C) |
| Heavy load may reduce cycle life | |
| Operating Environment | Charging: 0°C ~ 45°C, 65% ± 25%RH |
| Discharging: –10°C ~ 55°C, 65% ± 25%RH | |
| Cell Impedance | < 150mΩ (4.2V AC 1kHz measured) |
| Dimension of Single Cell | Thickness: Max 5.0mm |
| Width: Max 20mm | |
| Height: Max 25mm |
