(Fig.1) Quantum battery is Not a real battery but just an atom transiently absorbing light.
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-3rd-paragraph say -- Impractical quantum battery
"A quantum battery is only a theoretical concept (= unreal ) for now"
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.
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.
This recent news (2026) ↓
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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