10C High-Rate Discharge
A Cell That Still Flies at -20℃
When a drone will not fly in winter, the problem is often the battery, not the aircraft. QuanVol UAV batteries use INR18650 hybrid solid-liquid cylindrical cells, with 10C maximum continuous discharge and usable output even in low-temperature conditions, turning the operating window from a matter of weather into a matter of planning.
Low-Temperature Capacity Loss and High-Rate Loads
Are the Two Hard Constraints for UAVs
Agricultural spraying requires continuous high-current output, while surveying and aerial photography must withstand low temperatures. Conventional cells show a sharp capacity drop and rising internal resistance below 0℃, directly cutting operating time and payload margin.
INR18650 · Hybrid Solid-Liquid Cylindrical Cell Specifications
UAV / High-Rate Power EquipmentCore electrical performance
INR18650 · 18650 Standard Size| Technology system | field-driven solid-state battery (hybrid solid-liquid system) |
|---|---|
| Cell Type | Cylindrical lithium-ion cell (hybrid solid-liquid system) |
| Nominal Capacity | 2100mAh @0.2C |
| Minimum Capacity | 2000mAh @0.2C |
| Nominal Voltage | 3.7V |
| Charge End Voltage | 4.20V |
| Discharge End Voltage | 2.5V |
| Standard Charge Current | 0.5C（1000mA） |
| Standard Discharge Current | 0.5C（1000mA） |
| Maximum Charge Current | 1C（2000mA） |
| Maximum Continuous Discharge Current | 10C（20000mA） |
| Internal Resistance | ≤20mΩ（AC 1kHz，25±2℃） |
| Weight | 43±1 g |
| Sleeve Color | Light purple |
Operating Temperature and Rate Limits
Temperature versus current limits during charge and discharge| State | Temperature Range | Maximum Allowed Rate |
|---|---|---|
| Charge | 0℃ ≤ T ≤ 10℃ | Max. 0.2C |
| Charge | 10℃ < T ≤ 50℃ | Max. 1C |
| Discharge | -20℃ ≤ T ≤ -10℃ | Max. 0.2C |
| Discharge | -10℃ < T ≤ 0℃ | Max. 0.5C |
| Discharge | T ≥ 0℃ | Max. 10C |
Maximum recommended cell surface temperature during charge and discharge: 0 ~ 50℃ for charging, -30 ~ 60℃ for discharging.
Rate Discharge Characteristics and Storage Performance
After standard charge, rest 10min, then discharge at each rate to 2.5V| Discharge Rate | 0.2C | 0.5C | 1C | 2C | 10C |
|---|---|---|---|---|---|
| Relative Capacity | 100% | ≥97% | ≥95% | ≥90% | ≥70% |
Even at a high 10C rate, more than 70% of capacity is still delivered. This is the margin UAVs need most during rapid acceleration, climb and wind-resistant maneuvering.
Cycle Life and Storage
Test conditions 25±2℃| Cycle Life | At 25±2℃, constant-current constant-voltage charge at 0.5C to 4.2V (cut-off 0.02C), constant-current discharge at 1C to 2.5V, rest 30min constitutes one cycle; after 800 cycles the remaining capacity is ≥ 80% of the initial capacity |
|---|---|
| Storage Characteristics at 25℃ | After standard charge and open-circuit storage for 30 days: remaining capacity ≥90%, recovered capacity ≥95% |
| High-Temperature Full-Charge Storage at 55℃ | At 100% SOC, stored for 7 days: remaining capacity ≥85%, recovered capacity ≥90% |
| Storage Conditions (1 month) | -30 ~ 50℃ |
| Storage Conditions (3 months) | -30 ~ 45℃ |
| Storage Conditions (12 months) | -30 ~ 25℃ |
| Relative Humidity | 0 ~ 75%RH |
Covering Three UAV Platform Scenarios
Industrial UAVs
Inspection, firefighting and emergency response are high-intensity operations. 10C discharge provides maneuvering margin, while usability at -20℃ determines whether missions can be flown in winter.
Agricultural Spraying UAVs
Continuous spraying demands sustained high-current output. More than 70% of capacity is retained at a 10C rate, making the recharge rhythm between sorties more predictable.
Surveying and Aerial Photography UAVs
Long endurance and low temperatures pose a dual challenge. Capacity remains at 80% after 800 cycles, giving the battery pack higher lifetime value.
Send Us Your Aircraft Parameters
Tell us your takeoff weight, target endurance and ambient temperature range. QuanVol will provide a battery pack design and measured data matched to your operating conditions.
The figures above are specifications measured and achieved for the INR18650 model in the QuanVol UAV battery product line. Any citation of this data must reference the model. Values differ across product lines and models; the datasheet for the specific model prevails. Pricing is quoted individually according to model and order quantity and is not disclosed through public channels.