(Fig.1) Quantum battery is Not a real battery but just an atom transiently absorbing light.
This or this-1st-paragraph says -- Quantum battery storing light
"a quantum battery, the device stores the energy of the absorbed photons and can be charged simply by shining light on it"
This or this-3rd-paragraph say -- Impractical quantum battery
"A quantum battery is only a theoretical concept (= unreal ) for now"
This or this-lower-Discussion says -- Impractically-short storing time
"Quantum batteries face many challenges that make them hard to implement and hard to apply to real-world uses.
..allowing them to only store energy for extremely short periods of time."
The 10th, 4th-last paragraphs of this recent hyped news (7/8/2025) say
"improving the energy storage from nanoseconds to microseconds." ← too short storing time of an impractical quantum battery
"While a working quantum battery could still be some time away," ← still useless.
↑ As shown here, the overhyped quantum battery is just an impractical atom or molecule (= between cavity mirrors ) transiently absorbing and storing light (= in the unseen superposition of two states ? ← they baselessly claim ) for only extremely-short time of less than 1 microsecond, which can never be a real battery.
This or this-recent useless hyped quantum battery news (8/2026) ↓
4th-paragraph says -- Overhyped quantum battery
"In March 2026, his team made an important breakthrough when they unveiled what they say is the world's first working quantum battery prototype."
6th-paragraph says -- Unreal quantum battery
"Others, though, remain strongly sceptical about their real-world viability."
14th-paragraph says -- Just a molecule with light
"two tiny mirrors are placed 100nm apart. He fills the tiny space between the mirrors with organic dye molecules, then beams in a laser."
15th-paragraph says
"Using this method, the light and the molecules become strongly coupled, forming hybrid light-matter states, which enhances the system's ability to absorb and store (light) energy"
23-paragraph says -- Store light for only nanoseconds
"However, at present, the prototype battery can only hold a very small amount of energy – a few billion electron volts – for a matter of nanoseconds. To power conventional devices, it would need to store far more energy for far longer."
↑ This quantum (fake) battery consisting of molecules storing absorbed light as transient excited states for only nanoseconds is impractical forever.
The last paragraph of this hyped news (2026) says
"While quantum batteries remain an emerging technology and further development is required," ← still useless quantum battery.
1st-paragraph says -- Still useless quantum battery
"A quantum battery has been built within a quantum computer, a first step in determining whether such batteries could play a role in powering future quantum technologies (= still useless )."
2nd-paragraph says -- Impractical quantum battery
"quantum batteries rely on quantum bits, or qubits, which undergo changes in their quantum states... but the practicality and usefulness of quantum batteries remain open questions."
8th-paragraph says -- Useless quantum battery
"In his view, there is currently No obvious way to translate the measured quantum battery advantages into unambiguously useful devices."
The 2nd-last paragraph of this hyped news (7/10/2025) say
"So far, the researchers' model is merely theoretical, and much work still needs to be done before it can be realized experimentally." ← No experimental realization
↑ Still pie-in-the-sky impractical quantum battery expressed only as nonphysical math symbols with No real particle shapes ( this-p.2~5 ).
The 8th, 10th, last paragraphs of this hyped news (2025) say
"The practical realization and application of QBs (= quantum battery ) face two major challenges... One is the degraded charging efficiency... The other is the spontaneous energy loss" ← Quantum battery is impractical
"we propose a paradigm-shifting solution" ← Just proposal with No experimental realization.
"we plan to (= still unrealized ) develop a many-body QB model"
↑ This research is just about the impractical theory with No experiments ( this-p.4-Fig.3 says other parameters used for numerical simulation ).
The 2nd, 3rd, 6th paragraphs of this or this overhyped news (2025) say
"scientists discovered that controlled heating and cooling of a quantum material allows it to both insulate from and conduct electricity, depending on the temperature"
"This material, named 1T-TaS2, could potentially (= still unrealized ) replace conventional silicon components in electronics, including laptops and smartphones. Quantum materials could accomplish the same tasks faster" ← overhyped fake news
"The new research demonstrates that this property can be attained by temperature fluctuations at more practical temperatures — around -100 degrees Fahrenheit (-73 degrees Celsius)" ← So this material used only at very low temperature (= cannot be used at room temperature ) is impractical.
↑ This research paper ( this ↓ ).
p.1-abstract says nothing about any practical use such as faster electronics, laptops, smartphones, contrary to the above overhyped fake news.
p.6-Fig.4a shows the speed of temperature change (= T K ) was very slow, taking ~ 4 seconds. ← ultra-slow material
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