Our company recently completed the mass production and shipment of a batch of high-rate soft-pack lithium cobalt oxide (LiCoO₂) batteries (model: 853496, specifications: 11.1V / 3S1P / 2600mAh / 35C continuous discharge / 70C instantaneous discharge).

The products have been shipped to the European and American markets. The core technical indicator of this batch of batteries is: the measured internal resistance of the entire pack is ≤10mΩ at -30℃, signifying the company's strong adaptability in the field of high-rate discharge under extremely cold conditions.

I. Urgent Demand in Extremely Cold Markets in Europe and America;

Low-Temperature Performance of Traditional Lithium Batteries Becomes a Bottleneck RC model racing, outdoor drone operations, and special equipment applications in high-latitude regions of Europe and America (such as Northern Europe, Canada, and the northern states of the United States) are constantly exposed to low-temperature environments ranging from -20℃ to -30℃. The performance degradation of lithium batteries at low temperatures is a recognized technical challenge in the industry: increased electrolyte viscosity leads to a decrease in lithium-ion migration rate, increases the risk of lithium plating at the negative electrode, and causes a non-linear increase in battery internal resistance—research data shows that at -20℃, the ohmic internal resistance of the battery increases by approximately 12.4%, and the polarization internal resistance increases by nearly 30%. This sharp increase in internal resistance directly leads to a more severe voltage drop, a significant reduction in effective discharge capacity, and in severe cases, equipment may fail to start normally or "misfire" in mid-air.

When selecting low-temperature batteries, European and American B2B buyers have shifted the most crucial screening criterion from "nominal capacity" to the measured internal resistance value under low-temperature conditions—this is the "hard currency" for measuring whether a battery can stably output power under extremely cold conditions.

II. Measured Internal Resistance ≤10mΩ at -30℃:

Technical Path and Parameter Analysis The 853496 type battery shipped this time is based on a lithium cobalt oxide cathode material system. Lithium cobalt oxide (LCO) batteries have a natural material advantage in low-temperature discharge—comparative studies show that LCO batteries retain almost twice the capacity of ternary lithium-ion batteries at -30℃.

Internal Resistance Low-Temperature Stability Analysis

Internal resistance is a decisive factor in battery performance at low temperatures. At -30℃, the internal resistance of conventional lithium polymer batteries often surges from 8-12 mΩ at room temperature to over 25-40 mΩ, causing a voltage drop of 2.3V-3.6V (V_drop = I × R) during continuous discharge at 91A, with the real-time output voltage falling below 8.8V, which is lower than the low-voltage protection threshold of most ESCs.

This batch of batteries, through optimized low-temperature ionic conductivity of the electrolyte and interface treatment of the positive and negative electrode active materials, stably controls the overall internal resistance of the battery pack to ≤10mΩ at -30℃. Based on continuous discharge at 91A, the voltage drop is only 0.91V, and the real-time output voltage remains above 10.19V—the single-cell voltage is still maintained at 3.4V, far exceeding the ESC low-voltage protection trigger threshold.

Consistency and Reliability Assurance

This batch of products strictly adheres to a 100% full inspection standard for overall internal resistance, with batch dispersion controlled within ≤±2mΩ. This ensures that European and American B-end customers do not need additional sorting and matching during mass installation, directly reducing assembly process costs and end-user failure rates.

III. Application Scenarios and Operating Conditions

This product is primarily designed for the following low-temperature, high-rate applications in the European and American markets:

Nordic/Canadian Winter RC Model Racing (1/10 Off-Road Vehicles, Short-Distance Trucks):

In track environments ranging from -20℃ to -30℃, continuous discharge at 35C ensures no attenuation of motor torque output;

Extremely Cold Region Outdoor Drone Operations (Inspection, Surveying):

In environments of -30℃, overall internal resistance ≤10mΩ ensures stable voltage in the flight control system and prevents false alarms from triggering low-voltage protection.

IV. Conclusion

This mass shipment of -30℃ ultra-low temperature, high-rate lithium batteries validates the company's engineering capabilities in two key technical areas: low-temperature electrolyte adaptation for lithium cobalt oxide systems and low internal resistance consistency control.

With a core technology label of ≤10mΩ measured at -30℃, this product provides customers in the European and American markets with a high-rate power solution that can be quantitatively verified under extremely cold conditions for RC models, drones and special equipment.