Comment on Solar powered personal umbrella with battery?

floop@lemmy.dbzer0.com ⁨3⁩ ⁨weeks⁩ ago

• nimpnin@sopuli.xyz ⁨3⁩ ⁨weeks⁩ ago

  Nah. You could DIY something like that for 30€ or something, let alone mass produce. The only problem is that the folding would be more clumsy and probably take a bit more space folded

  source

  • floop@lemmy.dbzer0.com ⁨3⁩ ⁨weeks⁩ ago

    Slapping one together out of spare parts is not at all the same as mass producing one in a factory. And whatever you could slap together for 30 bucks would, as I said, in previous comment, suck and break very easily, not to mention that you wouldn’t be able to bring it anywhere close to the ocean for fear of everything corroding extremely quickly.

    source

    • nimpnin@sopuli.xyz ⁨3⁩ ⁨weeks⁩ ago

      Yeah. Mass producing can be orders of magnitude cheaper.

      It’s a ridiculous argument. Of course something like that could be manufactured, it’s just too niche of a market so nobody has made it a reality (yet).

      source
  • Onomatopoeia@lemmy.cafe ⁨3⁩ ⁨weeks⁩ ago

    Lol that tiny ass solar setup ain’t charging both a laptop and a phone, least of all with them running.

    That can just barely charge a phone (source - I’ve done a lot of math around this, solar panels have very low output per square meter).

    source

    • Korhaka@sopuli.xyz ⁨3⁩ ⁨weeks⁩ ago

      I would think of using the solar panel to charge a battery pack instead, then you can power devices from that. Although you may be charging the battery for 8 hours to power a laptop for 2.

      source
    • nimpnin@sopuli.xyz ⁨3⁩ ⁨weeks⁩ ago

      Who said it would?

      source

      • shalafi@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

        The picture clearly implies that.

        source

        • -> View More Comments
  • Valmond@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

    I have 2, around 25cm x 30cm and, when perfectly aligned to a strong summer sun, they do 1 watt and 2 watts respektively. Amazing.

    Also, sitting outside in the harsh sun with a laptop? No thank you 😁.

    This is really niche stuff for when you can’t even reload your power bank once every couple of days IMO.

    source

    • Ilovethebomb@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago

      Yeah, that’s my experience as well, you leave them out all day and get half a power bank if you’re lucky. Basically only worthwhile if you’re camping somewhere remote for an extended period of time.

      source

      • pineapplelover@lemmy.dbzer0.com ⁨3⁩ ⁨weeks⁩ ago

        I got one to charge my phone to 1%. Pretty happy

        source
    • nimpnin@sopuli.xyz ⁨3⁩ ⁨weeks⁩ ago

      Now look at the standard umbrella and figure out if it is 25x30cm…

      source
  • Ilovethebomb@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago

    I’ve got a very similar panel myself, in fact it’s probably a bit bigger.

    If you leave it out all day, under ideal conditions, it will put around 10AH worth of charge into a power bank, maybe a bit more, so 40-50 watt-hours if you’re lucky, over twelve hours.

    Not a worthwhile amount of power.

    source

    • Korhaka@sopuli.xyz ⁨3⁩ ⁨weeks⁩ ago

      Yeah this has always put me off solar panels like this, for their cost they make fuck all and if you just need power for a day or two it’s better to get a battery. Only if you need weeks does solar+battery start to make sense instead.

      source
    • nimpnin@sopuli.xyz ⁨3⁩ ⁨weeks⁩ ago

      That charges a phone just fine?

      I use a smaller panel to charge a battery at a summer cottage. That keeps my and a few other people’s phones charged pretty alright.

      source

      • Ilovethebomb@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago

        Not worthwhile if you’re carrying it around all day.

        source

        • -> View More Comments
• Jimmycakes@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

  There’s plenty of solar panels that don’t weigh a lot these days

  source