Comment on Solar powered personal umbrella with battery?

• Valmond@lemmy.world ⁨1⁩ ⁨day⁩ 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.

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  • Ilovethebomb@sh.itjust.works ⁨1⁩ ⁨day⁩ 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.

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    • pineapplelover@lemmy.dbzer0.com ⁨12⁩ ⁨hours⁩ ago

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

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  • nimpnin@sopuli.xyz ⁨1⁩ ⁨day⁩ ago

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

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• floop@lemmy.dbzer0.com ⁨2⁩ ⁨days⁩ 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.

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  • nimpnin@sopuli.xyz ⁨1⁩ ⁨day⁩ 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).

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• Ilovethebomb@sh.itjust.works ⁨1⁩ ⁨day⁩ 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.

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  • Korhaka@sopuli.xyz ⁨7⁩ ⁨hours⁩ 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.

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  • nimpnin@sopuli.xyz ⁨1⁩ ⁨day⁩ 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.

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    • Ilovethebomb@sh.itjust.works ⁨1⁩ ⁨day⁩ ago

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

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      • nimpnin@sopuli.xyz ⁨1⁩ ⁨day⁩ ago

        Why? You can carry your phone and charge it at the same time.

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• Onomatopoeia@lemmy.cafe ⁨1⁩ ⁨day⁩ 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).

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  • Korhaka@sopuli.xyz ⁨7⁩ ⁨hours⁩ 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.

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  • nimpnin@sopuli.xyz ⁨1⁩ ⁨day⁩ ago

    Who said it would?

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    • shalafi@lemmy.world ⁨1⁩ ⁨day⁩ ago

      The picture clearly implies that.

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      • nimpnin@sopuli.xyz ⁨1⁩ ⁨day⁩ ago

        A computer?

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