How BYD got EV chargers to work almost as fast as gas pumps
Chinese automaker BYD’s new 1.5 MW “flash charging” system, which can add hundreds of miles of range to an EV in about five minutes, is prompting debate over whether ultra-fast charging removes one of the last major advantages of gasoline cars. Commenters weigh the technical feasibility and grid impact of such high-power chargers, the role of buffer batteries and new chemistries in managing heat and degradation, and how quickly this could scale beyond China. The conversation widens to geopolitical and policy angles, including Western bans and subsidies, fears that the US and Europe are falling behind China on EV and infrastructure, and differing public attitudes toward state intervention and surveillance.
EV Fast-Charging Claims and Technology
- BYD’s “FLASH” system reportedly uses ~1.5 MW chargers and new Blade 2.0 batteries to reach ~70% in 5 minutes and ~97% in ~9–12 minutes, with thousands of stations already built or planned in China and Europe.
- Details of the chemistry and thermal management are only partly described: mentions of improved LFP-type cells, reduced internal resistance, better charge curves, and higher power from 80–95% state of charge.
- Some commenters see this as an incremental step following CATL’s fast-charging work; others treat it as a major leap. Technical specifics remain unclear.
Practicality, Grid, and Infrastructure
- Skeptics argue that 1.5 MW per stall is infeasible at scale without massive grid upgrades, calling it demo-level only.
- Supporters counter that buffer batteries or supercapacitors at stations can smooth demand: grid charges storage steadily, which then provides short, high-power bursts.
- Debate over using retooled gas stations vs. simpler parking-lot chargers; charging doesn’t need spill-containment infrastructure like fuel.
- Several note that 5–10 minutes is already “good enough” because drivers typically want a break after ~300–400 miles.
Battery Lifespan and Degradation
- Concerns that ultra-fast charging will shorten battery life, based on e-bike and older EV experience.
- Others cite data suggesting modern EVs degrade ~1.5–3% capacity per year, with faster charging modestly increasing wear, and argue batteries will outlast the car for most users.
- LFP chemistry is described as heavier but cheaper, safer, and longer-lived, increasingly moving upmarket.
User Experience and Infrastructure Gaps
- In dense or EV-friendly regions with strong fast-charger networks, many users already find ~150 kW / ~20-minute stops acceptable.
- In sparse regions (e.g., Canadian prairies), limited 50–100 kW chargers force 1 hour of charging per 2 hours of driving; faster charging would be a major quality-of-life improvement and reduce queues.
Geopolitics, Industrial Policy, and Protectionism
- Strong thread on whether the US and Europe are “falling behind” China due to political dysfunction, fossil-fuel interests, and lack of long-term industrial strategy.
- Others highlight China’s heavy subsidies, capital controls, and authoritarian system, questioning fairness and whether the West should deepen economic dependence on a rival.
- Bans or barriers on Chinese EVs are seen either as necessary protection or as consumers being denied superior tech.