Sunwoda has released an intelligent flash-charging battery system solution with a peak rate of 15C | Frontline

On September 17, at the 2026 New Energy Battery Industry Development Conference held in Zaozhuang, Shandong, Sunwoda Power officially released its smart flash-charging battery system solution.

According to official information from Sunwoda, the new system supports a range of over 700km, with a low-temperature range retention rate of over 90% at -20℃, a cell energy density of 190Wh/kg, and a system volume utilization rate of no less than 80%. Actual tests by Sunwoda show that at normal temperature, the battery can be charged from 10% to 70% in 5 minutes, and reach 97% in 9 minutes, adding 100km of range with just 1 minute of charging; in a -30℃ low-temperature environment, it can be charged from 20% to 97% SOC in 12 minutes.

However, the most notable part of this set of data is not the 15C peak figure itself, but the two commitments of low-temperature flash charging and unlimited flash charging times. The former addresses the real pain points of users in northern China, while the latter directly responds to the long-term damage of high-rate charging to battery life. In addition, for non-commercial vehicles, Sunwoda promises unlimited flash charging times within the 10-year/300,000-kilometer warranty period.

In terms of technical paths, Sunwoda has continued its consistent development idea of advancing both flash charging and intelligentization. The Smart Cell 3.0 is equipped with a custom dedicated chip, realizing five-dimensional perception of voltage, temperature, internal resistance EIS, expansion force and air pressure, with ED loss integrated on the top cover lower than 0.1%, wireless communication PDR exceeding 99.9%, and latency lower than 300ms. The energy domain controller achieves microsecond-level safety response, while the cloud management system builds a "electricity-thermal-mechanical-resistance" battery digital twin through data aggregation and model training, improving SOX accuracy by 40% and cycle life by 15%.

Passive protection and active early warning are another core line of this solution. The system can identify more than 20 types of faults, give early warnings 2 to 10 days in advance with an accuracy rate of 99.77%, and the SOH error does not exceed 2%. For safety design, it adopts a multi-point triggering scheme with high-temperature water-cooled clamps, aiming to achieve zero thermal diffusion in thermal runaway scenarios.

Looking back at Sunwoda's flash charging technology roadmap, its development pace is not slow. In 2022, it mass-produced the world's first 4C flash charging battery. In 2025, it released the Flash Charging Battery 4.0, with the charging current increased to 1800A, peak rate of 15C, matched with 800-1000V systems, and the peak charging power exceeding 1.4 MW.

Therefore, Sunwoda's release of the 15C solution at the current moment is not abrupt in the context of the competition in the power battery industry.

At the 2026 Beijing Auto Show, fast charging and flash charging have already become the most prominent technical labels in the battery exhibition area. The charging rate is leaping from 4C and 5C to 10C and 15C.

The logic behind the leading battery enterprises collectively betting on flash charging is not complicated. When the penetration rate of new energy vehicles crosses the critical point, energy replenishment efficiency, instead of driving range, has become one of the highest-weight variables in users' car purchase decisions. Whoever can take the lead in launching a credible mass-produced solution that makes "charging as fast as refueling" a reality will occupy a more favorable position in the vehicle supporting competition in the next stage.

However, the large-scale implementation of flash charging technology is far more than a rate competition at the individual battery cell level. Thermal management under high-current charging, the erosion of high-rate cycles on battery life, high-power matching at the charging pile end, and the load-bearing capacity of the power grid side are all practical problems standing between "15C" and the actual user experience.

It is worth noting that the regulatory authorities have already set standards for the safety bottom line of flash charging. The new national standard GB38031-2025 issued by the Ministry of Industry and Information Technology clearly requires that battery cells with a total charging time of no more than 15 minutes from 20% to 80% must still pass the external short circuit test without fire or explosion after 300 fast charging cycles. This means that the competition for flash charging batteries is shifting from "how fast you can charge" to "how long the battery can last under fast charging".

At this node, Sunwoda not only released the smart flash-charging battery system solution, but also launched the "All-Round · Boundless" optical storage flash-charging open ecological platform, covering the integrated infrastructure of flash charging batteries, energy storage batteries, backup storage systems, flash charging hosts and flash charging terminals. The intention of this move is very clear: it is not just selling batteries, but delivering the energy replenishment infrastructure as a complete system.

The second half of the flash charging battery competition is not about the size of the peak rate number, but about who can find the balance point between safety, service life, low temperature performance and cost that can truly be accepted by automakers for large-scale vehicle installation. The 15C answer sheet given by Sunwoda has at least raised the difficulty of this challenge by another level.