Chinese Startup develops nuclear battery for smartphones that will last 50 years without charging
Betavolt, a Chinese startup, claims a groundbreaking achievement with the development of a nuclear battery that can power smartphones for an impressive 50 years without requiring charging. This nuclear battery, deemed the world's first miniaturized atomic energy system, utilizes 63 nuclear isotopes packed into a module smaller than a coin.
The technology involves converting energy released by decaying isotopes into electricity, a concept first explored in the 20th century and now realized by Betavolt. The startup has initiated pilot testing and plans to mass-produce the battery for various applications, including smartphones and drones.
In their press release, Betavolt stated, "Betavolt atomic energy batteries can meet the needs of long-lasting power supply in multiple scenarios, such as aerospace, AI equipment, medical equipment, microprocessors, advanced sensors, small drones, and micro-robots." They believe this innovation will provide China with a competitive advantage in the AI technology era.
The initial nuclear battery by Betavolt delivers 100 microwatts of power with a voltage of 3V, measuring a tiny 15x15x5 cubic millimeters. The company aims to produce a battery with 1 watt of power by 2025. The small size allows for multiple units to be connected, increasing power output, envisioning a future where mobile phones never need charging, and drones can fly indefinitely.
Ensuring safety, Betavolt's design features a layered structure to prevent fire or explosions when subjected to sudden force. The battery can operate in a wide temperature range, from -60 degrees Celsius to 120 degrees Celsius.
To create the battery, Betavolt used nickel-63, a radioactive element, as the energy source, employing diamond semiconductors for energy conversion. The team developed a thin single-crystal diamond semiconductor and placed a nickel-63 sheet between two diamond semiconductor converters. The radioactive source's decay energy is then converted into electrical current.
Addressing radiation concerns, Betavolt assures users of safety, stating no external radiation. It is deemed suitable for use in medical devices inside the human body, such as pacemakers and cochlear implants. After the decay period, the isotopes transform into a stable, non-radioactive isotope of copper, posing no environmental threat.
The BV100 battery by Betavolt is also considered more secure than conventional batteries, not catching fire or exploding when punctured or exposed to high temperatures.
The development of miniaturized nuclear batteries has been a longstanding goal, and Betavolt's breakthrough technology has the potential to revolutionize electronics by eliminating the need for chargers or portable power banks.
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TMC MP Saket Gokhale slams Bihar electoral roll revision, claims 1.26 crore voters 'deleted'
New Delhi(PTI): Trinamool Congress MP Saket Gokhale on Monday said 1.26 crore voters have been "deleted" from Bihar's electoral rolls following the Special Intensive Revision (SIR) exercise and challenged the government to a debate on the issue in Parliament.
Sharing the Election Commission's SIR data in a post on X, Gokhale said the poll panel "conveniently" did not share any information regarding its claim of having found foreign nationals in Bihar.
As the month-long first phase of the SIR has concluded, the EC on Sunday said that enumeration forms from 7.24 crore or 91.69 per cent of voters of the state have been received.
It also said 36 lakh people were found to have either permanently shifted from their previous addresses or were not found. It pointed out that seven lakh Bihar voters were found to have enrolled themselves at multiple places.
"ECI has deleted 1.26 crore voters in Bihar from the 2024 Lok Sabha voter list overnight," Gokhale, the TMC Rajya Sabha MP, said on X.
Calling the details revealed by the EC "bizarre", Gokhale pointed out that of a total of 7.90 crore voters, forms have been collected from only 91.69 per cent -- 7.24 crore voters.
"This means that forms were not collected from 65 lakh voters, and they will be deleted. About 22 lakh voters (2.83 per cent) have been deleted because they're claimed to be deceased, about 36 lakh voters (4.59 per cent) have been deleted because they're claimed to be untraceable, and about 7 lakh voters (0.89 per cent) claimed to be found as duplicate entries so half i.e. 3.5 lakh entries deleted," he said.
"ECI has conveniently not disclosed how many voters were found to be non-citizens of India. This is important because ECI had claimed that the SIR was being done to 'remove illegal immigrants'," Gokhale said.
EC sources had earlier said their field-level functionaries found "a large number of people" from Nepal, Bangladesh and Myanmar during house-to-house visits made for the ongoing intensive review of the voters' list in Bihar.
Gokhale further said the names "deleted" were on the voters' list in the last Lok Sabha polls.
"A total of 1.26 crore voters in Bihar, whose names were on the Lok Sabha 2024 voter list just one year ago, have been deleted from the new voter list," he said.
"To give you a comparable idea, the number of deleted voters in Bihar during the current SIR is equal to the entire combined population of Uttarakhand plus Himachal Pradesh or the entire combined population of all 6 states of the North-East (excluding Assam)," he said.
He said EC needed to answer some questions "urgently".
"The voter list was revised by ECI before the 2024 Lok Sabha elections. How on earth did 1.26 crore voters become ineligible in just one year?" he said.
"How many voters has the ECI been unable to reach for collecting their forms? Under the rules of SIR, those whose forms were not collected will be deleted. Therefore, what is the total number of voters whose names have been deleted only because their forms were not collected?" he questioned.
He said the EC has not collected documents along with the forms from all 7.24 crore voters.
"Does this mean that more voters will be deleted if their documents have not been collected with their forms?"
He reiterated West Bengal Chief Minister Mamata Banerjee's statement that the SIR exercise "is NRC by the back door".
"ECI had claimed 'removing foreigners from the voter list' as one of the reasons for conducting this SIR. Why has the ECI not disclosed how many actual 'foreigners' were found and deleted from the voter list during this SIR?" he said.
"It makes zero sense that 12 million people in Bihar have become 'ineligible' voters in just one year between the 2024 Lok Sabha elections till date... When 12 million people in a single state lose the right to vote overnight, it is a serious issue," he said.
He added that the opposition MPs have been pressing for a debate on the issue.
"Why is the Modi Govt so scared to have an open discussion on this in Parliament?" he added.
Meanwhile, the EC has asserted that no names will be deleted from draft rolls without following due process.
VERY IMPORTANT AND SHOCKING
— Saket Gokhale MP (@SaketGokhale) July 28, 2025
ECI has deleted 1.26 CRORE voters in Bihar from the 2024 Lok Sabha voter list OVERNIGHT
Last night, the ECI published details of ongoing "special intensive revision" of the electoral roll being conducted in Bihar. The deadline for collection of forms… pic.twitter.com/E7x2egYfCw
