Slashdot is powered by your submissions, so send in your scoop

 


Forgot your password?
Close
typodupeerror
×

Submission + - New charger could double the service-life of Li-Ion batteries 1

Submitted by NewtonsLaw
NewtonsLaw writes: Lithium-Ion (LI) batteries are the backbone of much of our modern technology. They're in our phones, our laptops, our smartwatches and even the EVs that are increasingly appearing on our roads. One of the problems with LI technolgy however, is the very finite life of those batteries.

In the case of an EV, the battery pack represents a very significant portion of the total price you pay when buying one. Right now, the life of EV batteries is generally considered to be at least eight years, under normal use. But what if that could be doubled — simply by changing the way those batteries are charged?

This announcement by researchers in Europe indicates that the service life (ie: the number of charg/discharge cycles) of LI batteries could be as much as doubled, through the use of a pulsed current charging technology.

The standard charge method for LI cells is to deliver a constant direct current (DC) until the voltage of the cell rises to around 4.2 volts, at which time the voltage is maintained at a constant level and the charge current allowed to fall off. Once the charge current reaches a predefined minimum level, the cell is considered charged.

The new pulsed current method does not use DC but instead opts to recharge by way of intermittent pulses of current. This is not a new charging technology although it's not the norm for LI cells. Pulsed current chargers have been used on older chemistries such as nickel-cadmium in order to reduce/eliminate the formation of dendrites that would otherwise create short-circuits or significantly increase the self-discharge rate. Applying this tech to recharging LI cells seems to be a significant game-changer, if the lab results are duplicated in "the real world (TM)"

Doubling the life of your EV's battery or even your smartphone's battery is no small thing.

Submission + - When #OpenToWork is really #OpenToScam

Submitted by benrothke
benrothke writes: Many job seekers often change their LinkedIn status to #OpenToWork.
Scammers have capitalized on that and reach out to them with scams to trick and swindle them.
They won’t find a new job, but will lose their money in a scam.

https://brothke.medium.com/whe...

Submission + - Scientists hit a 301 Tbps speed over existing fiber networks (zdnet.com)

Submitted by destinyland
destinyland writes: Today, UK Aston University researchers sent data at a 301 terabits per second (Tbps) clip over existing fiber networks.

How fast is that? It's about 1.2 million times faster than the US' medium fixed broadband speed of 242.48 megabits per second (Mbps). Or, it's fast enough to deliver 1,800 4K movies to your home in a second.

Submission + - SK hynix to Build $3.87 Billion Memory Packaging Fab in the USA (anandtech.com)

Submitted by DrunkenTerror
DrunkenTerror writes: SK hynix this week announced plans to build its advanced memory packaging facility in West Lafayette, Indiana. The move can be considered as a milestone both for the memory maker and the U.S., as this is the first advanced memory packaging facility in the country and the company's first significant manufacturing operation in America. The facility will be used to build next-generation types of high-bandwidth memory (HBM) stacks when it begins operations in 2028.

Submission + - Missouri County Declares State of Emergency Amid Suspected Ransomware Attack (arstechnica.com)

Submitted by Anonymous Coward
An anonymous reader writes: Jackson County, Missouri, has declared a state of emergency and closed key offices indefinitely as it responds to what officials believe is a ransomware attack that has made some of its IT systems inoperable. "Jackson County has identified significant disruptions within its IT systems, potentially attributable to a ransomware attack," officials wrote Tuesday. "Early indications suggest operational inconsistencies across its digital infrastructure and certain systems have been rendered inoperative while others continue to function as normal."

The systems confirmed inoperable include tax and online property payments, issuance of marriage licenses, and inmate searches. In response, the Assessment, Collection and Recorder of Deeds offices at all county locations are closed until further notice. The closure occurred the same day that the county was holding a special election to vote on a proposed sales tax to fund a stadium for MLB's Kansas City Royals and the NFL's Kansas City Chiefs. Neither the Jackson County Board of Elections nor the Kansas City Board of Elections have been affected by the attack; both remain open.

The Jackson County website says there are 654,000 residents in the 607-square-mile county, which includes most of Kansas City, the biggest city in Missouri. The response to the attack and the investigation into it have just begun, but so far, officials said they had no evidence that data had been compromised. Jackson County Executive Frank White, Jr. has issued (PDF) an executive order declaring a state of emergency. The County has notified law enforcement and retained IT security contractors to help investigate and remediate the attack.

Submission + - SPAM: Stop killing games

Submitted by sanf780
sanf780 writes: Ross Scott, from the YouTube channel Accursed Farms, is championing a self described amateurish international effort called Stop Killing Games. The mission is explained as:

An increasing number of videogames are sold as goods, but designed to be completely unplayable for everyone as soon as support ends. The legality of this practice is untested worldwide, and many governments do not have clear laws regarding these actions. It is our goal to have authorities examine this behaviour and hopefully end it, as it is an assault on both consumer rights and preservation of media.

The website describes the best identified paths that you can contribute with, including exact procedures on how to contribute. As an example, Ross is using the videogame The Crew, published by Ubisoft, selling over ten million units. Ubisoft announced on December 2023 that the game is being rendered unusable on March 31st 2024. No effort has been made by the publisher to allow owners of the game to play the game.

There are some game developers that show that games may be preserved, as described in Eurogamer article Live service devs should make a private hosted version of your game when projects are shut down. These developers are the rarity these days.
Link to Original Source

Submission + - 'Russia Might Have Caused Havana Syndrome' (washingtonpost.com)

Submitted by Anonymous Coward
An anonymous reader writes: A just-published investigation by Russian, American and German journalists has unearthed startling new information about the so-called Havana syndrome, or “Anomalous Health Incidents,” as the government calls the unexplained bouts of painful disorientation that U.S. diplomats and intelligence officers have suffered in recent years. The new information suggests but does not prove that Russia’s military intelligence agency is responsible. Earlier, agencies in the U.S. intelligence community had concluded that “it is very unlikely a foreign adversary is responsible.” They need to look again. [...]

[T]he new investigation by the Insider, a Russian investigative news outlet, in collaboration with CBS’s “60 Minutes” and Germany’s Der Spiegel, paints a different picture. It identifies the possible culprit as Unit 29155, a “notorious assassination and sabotage squad” of the GRU, Moscow’s military intelligence service. Senior members of the unit received “awards and political promotions for work related to the development of ‘non-lethal acoustic weapons’” — a term used in the Russian military-scientific literature to describe both sound- and radiofrequency-based directed energy devices. The investigation found documentary evidence that Unit 29155 “has been experimenting with exactly the kind of weaponized technology” experts suggest is a plausible cause. Moreover, the Insider reported, geolocation data shows that operators attached to Unit 29155, traveling undercover, were present in places where Havana syndrome struck, just before the incidents took place.

Even more concerning, the investigation found that a commonality among the Americans targeted was their work history on Russia issues. This included CIA officers who were helping Ukraine build up its intelligence capabilities in the years before Russia’s full-scale invasion in 2022. One veteran of the CIA Kyiv station was named the new chief of station in Vietnam and was hit there. A second veteran of the CIA in Ukraine was hit in his apartment in Tashkent, Uzbekistan. Both these intelligence officers had to be medevaced and were treated at Walter Reed National Military Medical Center. The wife of a third CIA officer who had served in Kyiv was hit in London. “Of all the cases” examined by the news organizations, they said, “the most well-documented involve U.S. intelligence and diplomatic personnel with subject matter expertise in Russia or operational experience in countries such as Georgia and Ukraine,” both of which were the scene of popular pro-Western uprisings in the past two decades. The news organizations point out that Russian President Vladimir Putin has often blamed these “color revolutions” on the CIA and the State Department. They conclude, “Putin would have every interest in neutralizing scores of U.S. intelligence officers he deemed responsible for his loss of the former satellites.”

Slashdot Top Deals

He has not acquired a fortune; the fortune has acquired him. -- Bion

Close