Li-Polymer Battery 501030 3.7V 120mAh Solar Lithium Ion Battery Cell
Compact lithium polymer battery designed specifically for wristbands and other small wearable devices, featuring high energy density and reliable performance.
Technical Specifications
| Parameter | Specification |
| Battery Type | 3.7V 120mAh LiPo Battery |
| Charge Voltage | 4.2V |
| Nominal Voltage | 3.7V |
| Nominal Capacity | 120mAh @ 0.2C Discharge |
| Charge Current | Standard: 0.2C, Rapid: 1.0C |
| Standard Charging Method | 0.5C CC charge to 4.2V, then CV charge till current ≤0.05C |
| Charging Time | Standard: 2.75 hours, Rapid: 2 hours |
| Max Charge Current | 0.5C |
| Max Discharge Current | 1.0C |
| Discharge Cut-off Voltage | 2.5V±0.25V (0.2C) |
| Operating Temperature | Charging: 0°C~45°C, Discharging: 0°C~45°C |
| Storage Temperature | -10°C~+45°C |
| Dimensions | Length: 30±0.5mm, Width: 10±0.5mm, Thickness: 5±0.2mm |
| Drop Test | Dropped from 1m height twice onto concrete - no fire/leakage |
| Cycle Life | ≥500 cycles |
Usage & Maintenance Guidelines
For use only with devices marked "3.7V Small Lithium Polymer Battery" (e.g., smart bracelets, micro sensors). Do not use with other battery specifications to prevent voltage mismatch.
Important: Inspect battery every 1-2 months. Discontinue use if you notice bulging or leakage (sticky white powder). For long-term storage, maintain charge at 3.7-3.8V (50%-60% capacity).
Storage Recommendations
- Store at 10-25°C (optimal 20°C) with humidity <60%
- Keep away from humid environments and heat sources
- Use insulated containers away from metal objects
- Wrap terminals when storing multiple batteries
Transportation Guidelines
- Wrap terminals with insulating tape or caps
- Use bubble wrap or foam bags for protection
- For bulk transport, use anti-static packaging
- Maintain temperature between 10-30°C during transport
Primary Applications
Portable Electronics
Bluetooth headsets, electronic scales, toys, and small consumer devices
Smart Wearable Devices
Children's smartwatches, wristbands, pedometers, and fitness trackers
Energy Storage & Monitoring
Dashcams, Bluetooth speakers, and anti-loss devices
Beauty & Health Appliances
LED beauty devices, curling irons, reading pens, and personal care devices
Medical & Industrial Instruments
Portable medical devices (thermometers, blood glucose meters) and industrial sensors
Product Images