Despite its tiny size, the battery manages to achieve a 200-watt-hour-per-liter energy density, which is comparable to that of larger, conventional lithium-ion batteries.
  • scarabic@lemmy.worldEnglish
    3·
    2 months ago

    If the mars rovers can function on a fraction of a watt,

    It doesn’t?

    Perseverance’s power system works essentially like a nuclear battery. …The power system will reliably produce about 110 watts …The MMRTG also charges two lithium-ion batteries, … Perseverance’s power demand can reach 900 watts during science activities.

    Source: NASA

    • WhiteOakBayou@lemmy.worldEnglish
      1·
      1 month ago

      To give some perspective on this, I’ve lived for the last three months in a camper with a DC fridge. 1350 watt battery. The rtg at 110w/hr would keep my battery charged. 50 watt tv, 72 watt fridge, 24 watt starlink plus lights and waterpump. It would be just enough for me to live on I’d say.

    • stoy@lemmy.zipEnglish
      31·
      2 months ago

      Yeah, see!

      An RTG could power my phone!

      Sigh, let me spell my point out for you…

      What I mean is that I can absolutely believe that a solid state battery could power the next gen smart watch, I doubt it will.

      Just as an RTG could power my phone, but I doubt that it will be powered by it.