E-bike batteries are, for the most part, a collection of 18650 batteries, packaged together and welded in series and parallel, attached to a battery management system (BMS). A "dead" e-bike battery may only have two or three truly dead cells inside, while the remainder work fine. This is useful knowledge that, for the most part, very few e-bike owners can really use. Arc welders are not a common tool to own, and most e-bike batteries are not designed to be opened, safely or otherwise.

French firm Gouach, essentially a three-person company, is pitching its Infinite Battery as the opposite of this status quo. It's a durable, fireproof casing into which you can place and replace 18650 batteries using only a screwdriver. It keeps you updated on the status of cell performance and heat through a Bluetooth-connected app. And it's designed for compatibility with "90% of existing e-bike brands," or you can upgrade an existing "acoustic" model.

Credit: Gouach

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When web services shut down and have time to put up a blog post about it, there's typically some real understatement in their explanation of "why." Bookmarking service Pocket's goodbye post truly delivers on this front, noting almost off-handedly that "the way people use the web has evolved." Yes, you might just say that.

Both Pocket and another browser add-on, Fakespot, are being shut down by Firefox maker Mozilla in early July. In a post about the closures, Mozilla cites the need to "invest our time and resources so we can make the biggest impact." Pocket's saving and curation powers will be implemented into Firefox, while Fakespot's analysis of online shopping reviews "didn't fit a model we could sustain."

Pocket started in 2007 as Read It Later, a way to bookmark web articles for later reading. It's not just the focus on published text articles that now seems quaint but also the idea that there was a finite amount of web material you would get back to and would have the time to do so. Those who do want that nice-sounding media experience can cobble it together in most modern browsers, which have built-in tools for managing bookmarks, distinct "reading lists," and even creating stripped-down "readable" versions of articles.

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I initially felt bad for the Medeo T9 City e-bike that Gazelle sent me for review. Not through any fault of its own but because I had just recently ridden Gazelle's Eclipse C380+, an all-inclusive beast that retailed for roughly 2.5 times the price of the Medeo T9 City. Would the lower-priced bike, with different versions of some of the same hardware, suffer compared to its beefier brethren?

Short answer: not really. The Medeo T9 City isn't trying to dominate the road; it just wants to get you where you're going. It has the same kind of automatic electric assist level shifting, just packed into a smaller handlebar display instead of a center console. It has chain and gear cogs instead of the Eclipse's belt drive and stepless shifting, an external battery instead of an inline, and a 250-watt Bosch Active Line motor instead of a 350-watt Performance Line Speed.

I think the Medeo T9 City likely makes for a good first or second e-bike, or perhaps a nice upgrade if you're prioritizing comfort and transport. Given its hill-smoothing motor, wide range of sizes, stable ride feel, and the backing of known bike brands, you could do much worse than a Gazelle with a Bosch motor.

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© Kevin Purdy

When my colleague Kyle Orland submitted Tetrisweeper for a list of Ars' favorite 2024 games not from 2024, I told him, essentially: "Good for you, not for me." I'm a pedestrian Tetris player, at best, so the idea of managing a whole different game mechanic, while trying to clear lines and prevent stack-ups, sounded like taking a standardized test while baking a three-layer cake.

And yet, here I am, sneaking rounds of Drop Duchy (Steam, Epic, for Windows/Linux via Proton) into lunch breaks, weekend mornings, and other bits of downtime. Drop Duchy is similarly not just a Tetris-esque block-dropper. It also has you:

• Aligning terrain types for resources
• Placing both your troops and the enemy's
• Choosing which cards to upgrade, sell, and bring into battle
• Picking between terrain types to leave behind
• Upgrading a tech tree with achievements
• Picking the sequence of battles for maximum effectiveness

Drop Duchy is a quirky game, one that hasn't entirely fused together its various influences without some seams showing. But I keep returning to it, even as it beats me to a pulp on Normal mode, based on decisions I made five rounds ago. It feels like a medium-deep board game, played at triple speed, with someone across the table timing you on how fast you arrange your tiles.

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© The Arcade Crew

Nextcloud, a host-your-own cloud platform that wants to help you "regain control over your data," has had to tell its Android-using customers for months now that they cannot upload files from their phone to their own servers. Months of emails and explanations to Google's Play Store representatives have yielded no changes, Nextcloud wrote in a blog post.

That blog post—and media coverage of it—seem to have moved the needle. In an update to the post, Nextcloud wrote that as of May 15, Google has offered to restore full file access permissions. "We are preparing a test release first (expected tonight) and a final update with all functionality restored. If no issues occur, the update will hopefully be out early next week," the Nextcloud team wrote.

A notice in Nextcloud's Android app regarding file uploads. Credit: Nextcloud

Ars has reached out to Google for comment, both before and after Nextcloud's update, and will update this post if we get a response.

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Many horses, including Spotify and Amazon's Kindle Store, have already left the barn. But Apple is moving quickly to shut the external payments door opened by last week's ruling that the company willfully failed to comply with court orders regarding anticompetitive behavior.

In an emergency motion filing late Wednesday (PDF), Apple described US District Judge Yvonne Gonzalez Rogers' "extraordinary Order" as including an injunction that "permanently precludes Apple from exercising control over core aspects of its business operations, including charging for use of its property and protecting the integrity of its platform and in-app purchase mechanism." A certificate (PDF) accompanying the emergency filing states that the order "fundamentally changes Apple's business and creates destabilizing effects" for App Store customers.

The restrictions, "which will cost Apple substantial sums annually," are not based on the company's conduct, Apple claims, but "were imposed to punish Apple for purported non-compliance" with the 2021 injunction. In her ruling (PDF), Gonzalez Rogers described Apple as conducting an "obvious cover-up" and said that Apple "at every turn chose the most anticompetitive option."

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You wouldn't steal a car, right? So you shouldn't pirate a movie, either.

That was the gist of the infamous "You Wouldn't Steal a Car" anti-piracy campaign from the Motion Picture Association of America during the mid-2000s. But questions are now being asked about just how carefully the MPAA followed its own anti-piracy principles when designing the campaign. Specifically: Did the MPAA rip off a key font?

The answer to that question is, like many matters involving typefaces, fonts, and copyright, somewhat complicated.

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© Aurich Lawson

Wizards of the Coast has released the System Reference Document, the heart of the three core rule books that constitute Dungeons & Dragons' 2024 gameplay, under a Creative Commons license. This means the company cannot alter the deal further, like it almost did in early 2023, leading to considerable pushback and, eventually, a retreat. It was a long quest, but the lawful good party has earned some long-term rewards, including a new, similarly licensed reference book.

Dungeons & Dragons owner Wizards of the Coast (WotC) put the core D&D rules into an Open Gaming License in the early 2000s, inspired by Richard Stallman's GNU General Public License. The idea was that by making the core mechanics, classes, spells, races, and monsters available for anyone to build on, royalty-free, more versions of games would draw more people into the tabletop roleplaying sphere, and perhaps back to the core D&D games and rule books. It also likely didn't do much harm to WotC's properties, as these basic aspects of the game, and bits taken from existing fantasy works, were going to be difficult to copyright.

WotC considered that the Open Gaming License (OGL) was open to revisions, however, and the company proposed changes to the OGL that would require that anyone making certain amounts of money had to report it (over $50,000 per year) or start paying royalties (over $750,000). A leaked version of that license put the higher-level royalties at 25 percent, and only covered printed materials and static PDFs, leaving virtual tabletop and software makers questioning where they might fit in.

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© WotC/Hasbro

The Common Vulnerability and Exposures, or CVE, repository holds the answers to some of information security's most vital questions. Namely, which security issue are we talking about, exactly, and how does it work?

The 25-year-old CVE program, an essential part of global cybersecurity, is cited in nearly any discussion or response to a computer security issue, including Ars posts. CVE was at real risk of closure after its contract was set to expire on April 16. The nonprofit MITRE runs CVE and related programs (like Common Weakness Enumeration, or CWE) on a contract with the US Department of Homeland Security (DHS). A letter to CVE board members sent Tuesday by Yosry Barsoum, vice president of MITRE, gave notice of the potential halt to operations.

"If a break in service were to occur, we anticipate multiple impacts to CVE, including deterioration of national vulnerability databases and advisories, tool vendors, incident response operations, and all manner of critical infrastructure," Barsoum wrote.

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Radio signal broadcasts have their usefulness, but they eventually end (except, perhaps, for SETI). Every so often, we mark the public end of a once-essential wavelength, such as 3G cellular, analog television, or the Canadian time check. One of the most weirdly useful signals will soon end in the United Kingdom, with notable consequences if its transition is not properly handled.

Beginning in the early 1980s, UK homes could have electrical meters installed with a radio teleswitch attached. These switches listened for a 198 kHz signal from the BBC's Radio 4 Long Wave service, primarily broadcast from the powerful Droitwich Transmitting Station. These switches listened to 30 messages per minute, waiting for a certain 50-bit data packet to arrive that signaled that electricity was now at cheaper, off-peak rates ("tariffs" in the UK).

With this over-the-air notice, homes that bought into Economy 7 or Economy 10 (7 or 10 hours of reduced-price power) could make use of ceramic-stuffed storage heaters that stayed warm into the day, prepare hot water heaters, and otherwise make use of off-peak power. How the electrical companies, BBC, and meters worked together is fascinating in its own right and documented in a recent video by Ringway Manchester (which we first saw at Hackaday).

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© Richard Harvey (Public domain)

Hatsushima is not a particularly busy station, relative to Japanese rail commuting as a whole. It serves a town (Arida) of about 25,000, known for mandarin oranges and scabbardfish, that is shrinking in population, like most of Japan. Its station sees between one to three trains per hour at its stop, helping about 530 riders find their way. Its wooden station was due for replacement, and the replacement could be smaller.

The replacement, it turned out, could also be a trial for industrial-scale 3D-printing of custom rail shelters. Serendix, a construction firm that previously 3D-printed 538-square-foot homes for about $38,000, built a shelter for Hatsushima in about seven days, as shown at The New York Times. The fabricated shelter was shipped in four parts by rail, then pieced together in a span that the site Futurism says is "just under three hours," but which the Times, seemingly present at the scene, pegs at six. It was in place by the first train's arrival at 5:45 am.

Either number of hours is a marked decrease from the days or weeks you might expect for a new rail station to be constructed. In one overnight, teams assembled a shelter that is 2.6 meters (8.5 feet) tall and 10 square meters (32 square feet) in area. It's not actually in use yet, as it needs ticket machines and finishing, but is expected to operate by July, according to the Japan Times.

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© West Japan Railway Company

Road trips with just two people always have their awkward silences. In Dustland Delivery, my character, a sharpshooter, has tried to break the ice with the blacksmith he hired a few towns back, with only intermittent success.

Remember that bodyguard, the one I unsuccessfully tried to flirt with at that bar? The blacksmith was uninterested. What about that wily junk dealer, or the creepy cemetery? Silence. She only wanted to discuss "Abandoned train" and "Abandoned factory," even though, in this post-apocalypse, abandonment was not that rare. But I made a note to look out for any rusted remains; stress and mood are far trickier to fix than hunger and thirst.

Dustland Delivery, available through Steam for Windows (and Proton/Steam Deck), puts you in the role typically taken up by NPCs in other post-apocalyptic RPGs. You're a trader, buying cheap goods in one place to sell at a profit elsewhere, and working the costs of fuel, maintenance, and raider attacks into your margins. You're in charge of everything on your trip: how fast you drive, when to rest and set up camp, whether to approach that caravan of pickups or give them a wide berth.

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© Lilith Games