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batteries

  1. Gord_in_Toronto

    Ultracapacitors - Better than batteries?

    An interesting article in the Toronto Star a couple of days ago ( https://www.thestar.com/business/mars/2021/11/23/getting-to-net-zero-montreal-venture-effenco-lightens-the-impact-of-heavy-duty-trucks.html ) about a company, Effenco, ( https://www.effenco.com/ ) that is making and selling trucks...
  2. Orphia Nay

    New generation batteries - just add sugar

    "Australian researchers say they've opened the path to a new generation of batteries that could allow an electric vehicle to drive from Melbourne to Sydney on a single charge. "And the crucial ingredient was a spoonful of sugar." "a team from Monash University say they've found a way of making...
  3. Brian-M

    Powering Humanoid Robots

    Reading about humanoid robots, I noticed that they're power-hungry gadgets. Most of them can only store enough power in their batteries for an hour or two of running time. For example, the Asimo has a 13 pound (6kg) lithium ion battery, but even a battery this huge only lasts an hour. I assume...
  4. Q

    More better battery for plug-in cars?

    I just noticed this news story about a battery breakthrough, and was wondering about the legitimacy. Apologies if this has been covered already. Here's the link: http://news.yahoo.com/energy-dense-battery-could-enable-long-distance-electric-230100576.html
  5. cj.23

    'Paranormal' battery draining

    Hello A colleague is working on a (sceptical as it happens) study of a supposed paranormal location and has discovered a consistent pattern of claims of digital cameras, vidcams and other battery powered equipment losing charge. She has a hypothesis this may be related in someway to the...
  6. Alareth

    Woo strikes without warning

    RadioShack put up a new website a few weeks ago (http://rsinventionlab.com) targeted at showing off small electronics projects you can do using parts available in stores. In addition users can share their own projects. I was browsing the site to see if anything interesting had been posted and...
  7. S

    Another new battery concept

    A Stanford materials scientist has figured a way to use silicon instead of carbon in Li-ion batteries; silicon is much higher in lithium ion capacity, but expands when it absorbs the lithium ions and fractures, limiting its effective use in the anode. This materials researcher has found a way to...
  8. Oualawouzou

    2500mah vs 3600mah for a Wii remote

    Hello everybody... Recently, tired to plow through new batteries, I purchased a charger and some rechargeable batteries. All good and well.... but when I use them in a Nintendo Wii remote, they go from fully charged to fully drained in an hour! These are AA Nickel-Hydride batteries, 2500mah...
  9. RichardR

    EM waves drain batteries

    I have a friend whose batteries (car, truck, cellphone, cordless phone etc) always seem to go flat. He thinks there is some form of electro-magnetic wave (unspecified / unknown origin) around his house that is draining his batteries. I think he is just bad at remembering to charge his...
  10. Ian Osborne

    Rechargeable batteries for sensor light

    My partner and I have bought a sensor light, the sort that comes on when it's dark and movement is detected, then switches itself off 30 seconds after everything is still again. The cheapo batteries that came with it lasted around three weeks, which isn't bad, but when we tried rechargeables in...
  11. a_unique_person

    Are high capacity NiMh AA and AAA batteries actually as good as they say they are?

    A AAA battery that claims to be 850mAh just seems to be too good to be true. Are they just pulling my leg? Do they exist, but not for the bargain basement prices the ones made in China cost?
  12. D

    Panasonic batteries make music sound better!

    Look here - unfortunately in Japanese (and some Czech): http://national.jp/product/conveni/battery/oxyride/lab/music/index.html Click on the two orchestras, and see the pie chart showing 83% of the members claim that the test portable CD players sounded better with the new batteries. This...
  13. El Greco

    Batteries ?

    I like batteries. I find the idea of portable energy fascinating. So, I am not very happy with what I perceive to be a lack of significant evolution in the technology of batteries. Shouldn't we have by now batteries for cell phones that could easily last for a month with heavy use ? Why do I...

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