4 ms·

That’s…really surprising? A ceiling fan uses about 75W a hour. A MacBook Pro has a 100 Wh battery and last about 4 hours so 25W per hour. Your laptop and monito

That’s…really surprising? A ceiling fan uses about 75W a hour. A MacBook Pro has a 100 Wh battery and last about 4 hours so 25W per hour. Your laptop and monitor should be lower than any other appliance. That being said, there’s a lot of options nowadays which is exciting! For instance, you could have a 200W port panel and a 1kWh battery system from eco flow that should run both with room to spare. Anker has a new system meant for patios but it’s only for Europe.

NotYourLawyer 3y ago
>75W a hour Just 75W.
- syntaxing 3y ago
  Yeah, it’s gets a bit murky to stick with power or energy even though Wh isn’t SI. But it’s usually pretty important to keep the time component when it comes to describing an energy storage system.
  - NotYourLawyer 3y ago
    75 watt-hours per hour then, if you must…
  - a_cardboard_box 3y ago
    Watts per hour are not a unit of power or energy. Watts are power. Watt hours are energy.
    - mjan22640 3y ago
      Joules are energy
      - olddustytrail 3y ago
        They are both energy. Watts are Joules/seconds so if you're dividing by time and then multiplying by time (an hour in this case) they obviously cancel out and you end up back with just Joules. Specifically 1 Watt-hour==3600 Joules.
  - nyrikki 3y ago
    Minute, hour, day are specifically allowed by CIPM to be used in SI. They just can't be used with prefixes. kWh is obviously inconsistent with SI conventions if commonly used; but 'kW⋅h' or 'kW h' is completely acceptable. As is 'W⋅h' A full list of acceptable non-SI units can be found in the brochure here under: "Non-SI units accepted for use with the SI units" https://www.bipm.org/en/publications/si-brochure https://www.bipm.org/en/publications/si-brochure
nkingsy 3y ago
I run my MacBook Pro off of the usbc pd port on my cheap ($130, 300wh) lifepo4 battery box. I got 2, plug one directly into a 100w solar panel, other powers the computer and monitor. Swap daily. If you want to run a line into your house you can get by with one, or just get a panel with a usbc pd output.

NotYourLawyer 3y ago

>75W a hour Just 75W.

syntaxing 3y ago
Yeah, it’s gets a bit murky to stick with power or energy even though Wh isn’t SI. But it’s usually pretty important to keep the time component when it comes to describing an energy storage system.
- NotYourLawyer 3y ago
  75 watt-hours per hour then, if you must…
- a_cardboard_box 3y ago
  Watts per hour are not a unit of power or energy. Watts are power. Watt hours are energy.
  - mjan22640 3y ago
    Joules are energy
    - olddustytrail 3y ago
      They are both energy. Watts are Joules/seconds so if you're dividing by time and then multiplying by time (an hour in this case) they obviously cancel out and you end up back with just Joules. Specifically 1 Watt-hour==3600 Joules.
- nyrikki 3y ago
  Minute, hour, day are specifically allowed by CIPM to be used in SI. They just can't be used with prefixes. kWh is obviously inconsistent with SI conventions if commonly used; but 'kW⋅h' or 'kW h' is completely acceptable. As is 'W⋅h' A full list of acceptable non-SI units can be found in the brochure here under: "Non-SI units accepted for use with the SI units" https://www.bipm.org/en/publications/si-brochure https://www.bipm.org/en/publications/si-brochure

nkingsy 3y ago

I run my MacBook Pro off of the usbc pd port on my cheap ($130, 300wh) lifepo4 battery box. I got 2, plug one directly into a 100w solar panel, other powers the computer and monitor. Swap daily. If you want to run a line into your house you can get by with one, or just get a panel with a usbc pd output.