23 Matching Annotations
  1. May 2024
    1. Over the past three years, battery storage capacity on the nation’s grids has grown tenfold, to 16,000 megawatts. This year, it is expected to nearly double again, with the biggest growth in Texas, California and Arizona.

      10x in 3 years?!

  2. Apr 2024
  3. Dec 2023
    1. we have enough of these minerals in the 01:16:25 world to run a world transportation system off electricity using batteries but we don't have enough if we need batteries to stabilize our grids because we've got intermittent power from solar 01:16:39 and wind
      • for: green growth - shortage of batteries
  4. Nov 2023
    1. Ore extraction is largest for EVs, growing 55 times from 2021, compared to 13 and 9 times for solar PV and wind power, respectively

      The share of mining going to cars is not really something we discuss in digital technology discussions enough

  5. Sep 2023
    1. Wind and solar are, of course, intermittent, but battery costs too are plummeting, to the extent that they often underbid so-called peaking plants burning natural gas

      Where would I look to find public evidence of this?

  6. Apr 2023
    1. You can indeed prolong moderns Li-Ion batteries lifespan by keeping them at a lower charge. If you never ever use it disconnected, you should keep it at 40%. E.g. Uber driver cellphone always-on in travels. However for daily light usage, 60% is considered the 'sweet spot' for practicality, and 80% gives you more freedom. 100% is when the battery is at its peak 'stress' level, and thus wear faster.
    1. Exposing the battery to high temperature and dwelling in a full state-of-charge for an extended time can be more stressful than cycling.
    1. Discharges your battery until it reaches 80%, even when plugged in
    2. This tool makes it possible to keep a chronically plugged in Apple Silicon Macbook at 80% battery, since that will prolong the longevity of the battery.
  7. Jan 2023
    1. But that’s just one way to get batteries into low-income customers’ homes. Sunrun also acts as a third-party owner of solar and battery systems that Grid Alternatives installs for customers that can’t or don’t want to borrow money to finance it. Third-party owners can monetize the value of federal tax credits for low-income households that don’t pay a large enough federal tax bill to take advantage of the credits themselves. 

      This feels like the project partner thing from before - income households can't access the support themselves, so you need an intermediary to arrange someone with a tax bill to recude, and presumably take a cut in the process.

    1. But filling a battery up and leaving it charged for days on end is not attractive – most battery operators make money by cycling (charging and discharging) at least once a day. Of all the interesting things to do with batteries, it’s not clear that solving curtailment will be the most lucrative.

      I wonder how much throughput to you need to break even?

  8. Dec 2022
    1. low self-discharge (<3% per month), you can store them for a longer period of time.

      This would be great for classic cars / garage queens that are stored.

  9. Oct 2022
  10. Jul 2022
    1. At the time, BYD used lithium iron phosphate batteries

      safer, longer life, less exotic materials, & what we seem to be switching back to.

  11. Jan 2022
    1. Point being (again), definitions seem to differ, and what you call "full stack" is what I call "batteries-included framework". Full stack simply means (for me) that it gives you a way of building frontend and backend code, but implies nothing about what functionality is included in either part.
    2. Nothing in "full-stack" requires having a validation library in order for it to be full-stack, that would more be leaning towards the "batteries included" approach to a framework instead of strictly being about "full-stack".
  12. Sep 2019
    1. What killed the electric scooter back then is the same thing that killed the electric car of year 2000: terrible lead-acid battery technology

      Lithium Ion batteries matured and saved the electric scooters and cars market. Back then in the year 2000, lean-acid battery was too immature

  13. Sep 2017
    1. tried to test some AA batteries. is 1.3 good? the lights didn't light up. Are the batteries on the meter low?

  14. Jun 2017
    1. series of small, powerful and inexpensive paper-based “BioBatteries” that developed from a simple origami shape in the lab of Assistant Professor Seokheun “Sean” Choi, PhD—and run on bacteria found in a few drops of dirty water—could transform point-of-care diagnostic testing in remote locations across the globe where medical resources are scarce


  15. Feb 2017
    1. A) Lithium-ion cells used in cars aren’t especially hazardous and are classified as landfill safe, B) They’re almost all recycled anyway

      Great to know that! I've heard the myth multiple times but never found out if it was true or not (didn't search for a long time though). Links to sources would be appreciated.