battery drain

Big Clive does a complete teardown of a lithium phone battery, taking apart the protection circuit, case and the cell itself. He notes it was risky because the cell was not discharged first.

Fully Charged episode where Elliot drives the NIO ES8 SUV and visits a battery swap station that replaces the pack in about three minutes. It covers the ownership model of swapping and what it could mean for EV charging.

A short South China Morning Post report on Nio's second-generation automated battery-swap stations for electric vehicles. It notes that Nio had built more than 800 stations in China by early 2022.

Short HD closeup of a Tesla Model S battery swap, showing the pack lowered out and another pushed into place.

Tom Scott borrows a Nio electric car in China and shows its automated battery swap station replacing the whole battery in minutes. He explains how swapping serves as an alternative to charging.

Linus Tech Tips explains how Windows Modern Standby causes laptops to drain battery while asleep, arguing it makes Windows laptops hard to recommend compared to MacBooks.

Dave Jones of EEVblog debunks the marketing claims of the self-charging nano nuclear diamond battery from NDB Inc. He argues it is no better than existing 100uW betavoltaic batteries, with an added graphene supercapacitor.

Tesla's 2020 Battery Day event, with a company update and a keynote on new cell design, manufacturing, vertical integration and cheaper lithium and materials. It ends with the Plaid Model S and a Q&A.

MIT's Donald Sadoway presents the liquid metal battery as a design for grid-scale stationary electricity storage, at an Imperial College London event in 2018. He covers the grid benefits of massive-scale storage.

GreatScott! tests ProLogium lithium ceramic batteries, a solid-state design. He measures their volumetric and gravimetric energy density, compares them to Li-ion and LiPo, and runs durability tests at the end.

Fully Charged visits Janus Trucks in New South Wales, Australia, which converts diesel trucks to electric with swappable battery packs. The truck carries 620 kWh of batteries and a 540 kW drive.

A short NOVA excerpt in which David Pogue abuses a Tufts-developed battery by cutting and damaging it, and it keeps working without catching fire. It comes from the documentary 'Search for the Super Battery'.

Professor Jeff Dahn lectures on why lithium-ion batteries die and how chemistry changes could make them last decades.

MIT professor Donald Sadoway argues that grid-scale storage is the missing piece for renewable energy. He sketches at the blackboard how large, cheap liquid-metal batteries could store wind and solar power.

Physics Girl compares hydrogen fuel cell cars and battery electric cars after driving 1800 miles in a Toyota Mirai. The video was part of a series sponsored by Toyota.

Fully Charged rides a 100% battery-electric ferry across the 4 km strait between Helsingborg, Sweden and Helsingør, Denmark. The ferry crosses up to 46 times a day and charges for a few minutes at each side. The video shows the charging setup, including the robot arm that couples the charger.

A short experiment dissolving the aluminum of a Coca-Cola can with drain cleaner to reveal the clear plastic film lining inside.

Tom Scott visits Dinorwig Power Station in Wales, a pumped-storage hydro plant often called Britain's largest battery. He explains how it works and how its role has shifted from TV pickup spikes to balancing wind and solar.

A TEDx talk arguing that battery electric vehicles are not as environmentally friendly as commonly believed and that the rush to adopt them is misguided. TED flagged it as containing claims that lack scientific support.

A CBC The National investigation into Apple's business practices, including undercover work on repair pricing and the battery slowdown scandal. It examines allegations of overpriced repairs and misdiagnosis.

A short University of Washington demo of ambient backscatter, where battery-free devices communicate by reflecting existing wireless signals. It shows devices powered and linked by ambient RF.

Bill Gates at Stanford's Global Energy Forum argues that cheaper solar, wind and storage are not nearly enough to stop climate change. He discusses natural gas, a carbon tax, nuclear, battery costs and the responsibilities of developing versus developed economies.

Engineering Explained works through whether electric cars are really worse for the environment than gasoline cars. It covers battery production emissions, the electricity mix used to charge, and how long an EV takes to break even on lifetime emissions.

Real Engineering examines the efficiency of hydrogen as an energy carrier. It follows production, storage and fuel cell conversion losses and compares hydrogen cars with battery electric vehicles.

An Autoline After Hours episode with teardown expert Sandy Munro and a panel of auto journalists. It covers his Tesla Model 3 teardown, including the battery, drive modules, build quality and manufacturing automation.

Big Clive shows how to pick up discarded disposable vape devices from the roadside and extract the rechargeable lithium cells inside. He explains why these devices contain the same circuitry as rechargeable ones and how to reuse the cells.

JerryRigEverything tours Li-Cycle to show how lithium-ion batteries from EVs, phones and tools are recycled. It walks through the process of shredding batteries and extracting materials.

Stanford futurist Tony Seba argues that electric vehicles, battery storage, solar and autonomous vehicles form a 10x exponential disruption that will make fossil fuels obsolete within about a decade. It draws on his Clean Disruption book.

Geekerwan's Chinese-language review of Intel's Lunar Lake lightweight laptop chip, covering performance, perf-per-watt curves and battery life benchmarks. It tests whether x86 can compete on efficiency.

Adam Something argues in four minutes that gravity batteries like Energy Vault, which lift concrete blocks with cranes, are a poor energy storage idea. He draws on a longer Thunderf00t debunk.

Louis Rossmann reviews the Lenovo ThinkPad P50, covering build, thermals and throttling, then spills liquid on it to test the keyboard drainage and spill protection.

A short clip of Bill Clinton's grand jury testimony in which he says it depends on what the meaning of the word 'is' is. It comes from questioning about Monica Lewinsky.

A long Technology Connections video arguing that public understanding of renewable energy is distorted. It covers solar economics, land use compared with ethanol corn, and battery myths such as cobalt.

An Al Jazeera investigation into Boeing's 787 Dreamliner, featuring current and former engineers who voice safety concerns. It covers quality control problems at the South Carolina plant and the roots of the battery problems that grounded the plane.

Real Engineering analyzes whether electric planes are feasible, focusing on battery energy density limits compared with jet fuel. It concludes electric flight works mainly for short ranges.

A Blender-animated explanation of the Toyota Hybrid Synergy Drive, showing how the engine, two motor-generators, planetary gearset and battery work together as an eCVT.

Sandy Munro interviews Elon Musk at Boca Chica about Tesla production, mega-castings, seats, structural battery packs and the difficulty of mass production.

Geekerwan reviews smartphone CPUs by power efficiency rather than benchmark scores, with test methodology and chapters on Qualcomm, Apple, Samsung and Google chips. It explains why high benchmark scores can coexist with heat and poor battery life.

Practical Engineering explains what a 100-year flood actually means, combining statistics, hydrology and how society treats risk. Grady walks through local drainage infrastructure and the caveats in estimating flood probability.

Mark Rober builds a hot tub filled with sand fluidized by air blown from below, so that the sand behaves like a liquid. He explains how fluidized beds work and shows people swimming in them.