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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Vijay seeks future CBI inquiry on Karur stampede in TN
Chennai (PTI): TVK chief Vijay has appealed to the CBI to hold its future inquiry into the Karur stampede case in Chennai or elsewhere in Tamil Nadu, citing his Assembly election-related engagements.
Prior to appearing for the CBI's questioning on March 15, the Tamilaga Vettri Kazhagam founder wrote to the investigating agency stating that he had already appeared for questioning in New Delhi on January 12 and 19 in compliance with the notices for his appearance before the CBI office in the national capital.
The letter dated March 14 was also marked to Justice Ajay Rastogi who has been appointed by the Supreme Court to oversee the investigation into the tragic Karur stampede that claimed 41 lives and left many injured.
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In the letter, Vijay pointed out that he had sought a minimum of 10-15 days' time for his appearance for the inquiry and also requested permission to appear either in Chennai or any other place in Tamil Nadu due to his "personal inconvenience and commitments and preoccupation with respect to the ensuring Assembly election work."
Inspite of the request, the investigating officer asked him to appear in New Delhi on March 15, he said.
On Sunday, the actor-politician was questioned for more than seven hours and left the CBI office at around 6.30 pm. During the third round of questioning, he was accompanied by his party leaders Aadhav Arjuna and C T R Nirmal Kumar.
According to TVK sources on Tuesday, Vijay was said to have stated in the letter that he appeared for inquiry as a "law abiding citizen." He and his party cadres were victims of the Karur tragedy and were in "unexplainable mental agony due to the loss of lives and injuries during the stampede (on September 27, 2025) despite genuine precautions."
The Tamil Nadu Assembly elections are scheduled on April 23.
