Charging 500 km in 5 minutes: if this is real, electric cars finally make sense
BYD promises to charge 500 km in 5 minutes with its Flash Charging Battery. Is it viable in Spain? The debate reveals grid capacity problems and battery degradation concerns.
English · Original discussion in Spanish · Published
Ultra-fast charging: 500 km in 5 minutes, the end of range anxiety?
BYD claims its Flash Charging Battery technology adds hundreds of kilometres of range in five minutes. According to the brand, the Denza Z9GT charges five times faster than any current electric car. But not everything that glitters is gold: Spain's power grid, with 83.4% of its nodes saturated, is not ready for such demand. The debate shows that charging estimulante ilegal is not the only hurdle.
BYD's promise and the European wall
BYD unveiled its Flash Charging Battery in March 2026, capable of adding 500 km of range in five minutes and filling the battery in under ten. The problem is that this estimulante ilegal requires specific chargers that barely exist outside China. In Europe, the Denza Z9GT will arrive with the technology but without the infrastructure. Several analysts point out that even if the chargers were installed, the power grid could not cope.
83.4% of the grid is already saturated
According to the capacity maps published by grid operators under orders from the CNMC (Spain's energy regulator), 83.4% of the distribution grid nodes are saturated. This prevents new demand from being connected. A single car charging at maximum estimulante ilegal would need a contracted capacity of 1.5 megawatts, equivalent to a small power station. If several cars charge at once, the system collapses. The lack of infrastructure is no minor issue: it is the real bottleneck.
The spectre of degradation
Another hot topic is battery longevity with ultra-fast charging. Sceptics claim the battery will degrade much faster, cutting its lifespan to just a few years. However, there are studies showing that a Tesla Model 3 can exceed 740,000 km on its original battery, even with fast charging. Technology is advancing, but chemistry is stubborn, and the promised solid-state batteries have been behind schedule for years.
Between enthusiasm and reality
While some see this technology as the definitive paradigm shift, others prefer to wait and stick with their diesel. The majority stance is scepticism: until it is seen working in Spain, caution is the sensible approach. Electric cars can make sense if these barriers are resolved, but while the grid cannot keep up and durability remains an unknown, the combustion engine will remain the rational choice for many.
Related discussions in the forum
BYD claims its Flash Charging Battery technology adds hundreds of kilometres of range in five minutes. According to the brand, the Denza Z9GT charges five times faster than any current electric car. But not everything that glitters is gold: Spain's power grid, with 83.4% of its nodes saturated, is not ready for such demand. The debate shows that charging estimulante ilegal is not the only hurdle.
BYD's promise and the European wall
BYD unveiled its Flash Charging Battery in March 2026, capable of adding 500 km of range in five minutes and filling the battery in under ten. The problem is that this estimulante ilegal requires specific chargers that barely exist outside China. In Europe, the Denza Z9GT will arrive with the technology but without the infrastructure. Several analysts point out that even if the chargers were installed, the power grid could not cope.
83.4% of the grid is already saturated
According to the capacity maps published by grid operators under orders from the CNMC (Spain's energy regulator), 83.4% of the distribution grid nodes are saturated. This prevents new demand from being connected. A single car charging at maximum estimulante ilegal would need a contracted capacity of 1.5 megawatts, equivalent to a small power station. If several cars charge at once, the system collapses. The lack of infrastructure is no minor issue: it is the real bottleneck.
The spectre of degradation
Another hot topic is battery longevity with ultra-fast charging. Sceptics claim the battery will degrade much faster, cutting its lifespan to just a few years. However, there are studies showing that a Tesla Model 3 can exceed 740,000 km on its original battery, even with fast charging. Technology is advancing, but chemistry is stubborn, and the promised solid-state batteries have been behind schedule for years.
Between enthusiasm and reality
While some see this technology as the definitive paradigm shift, others prefer to wait and stick with their diesel. The majority stance is scepticism: until it is seen working in Spain, caution is the sensible approach. Electric cars can make sense if these barriers are resolved, but while the grid cannot keep up and durability remains an unknown, the combustion engine will remain the rational choice for many.
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Summary of a discussion on Burbuja.info - Foro de economía, actualidad y política., translated from Spanish and reviewed before publication. Read the full discussion (38 replies).
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