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Wirelessly charging a laptop would waste so much energy. I really hope this isn’t what they’re planning.
by zshift 6y ago
Wirelessly charging a laptop would waste so much energy. I really hope this isn’t what they’re planning.
- Klathmon 6y agoI'm not sure that's true. I believe modern wireless chargers are around 75% to 85% efficient. That sounds bad at first, but I believe most ac-dc charging bricks are in the 80% to 90% efficiency range, so it's actually not much worse at all. And if it really is magsafe, the "secret sauce" there is the magnets will align things almost perfectly every time avoiding unaligned charging coils.
- theblindbat 6y agoBut aren't you going AC->DC->wireless? So it would stack
- AlexandrB 6y agoThere's still a charging brick powering the wireless charger so isn't the 75-85% stacked on top of the 80-90%? That gives you 56-77% efficiency.
- minitoar 6y agoI mean...an extra 50 watts maybe? Not great but doesn’t seem like a huge deal.
- zlsa 6y agoHow hot does a 50-watt incandescent lightbulb get? That's what an extra 50 watts of wasted power will feel like.
- minitoar 6y agoMy house is cold, the extra heat is welcome here. I only have electric heat.
- IfOnlyYouKnew 6y agoUnless you live in the tropics, electric heat is borderline unconscionable with regards to climate change.
- minitoar 6y agoI use solar power. Also, in nearby San Jose, California, they have banned NG in all new construction except commercial or multi family residences taller than 3 stories.
- marmaduke 6y agowhat's the conscionable alternative?
- minitoar 6y agoWear a sweater.
- azinman2 6y agoWhy is that? Your electricity might be from renewable resources. Or a non-renewable that is more efficient in total than using gas directly.
- minitoar 6y agoMy choices are grid, solar, propane. I only use propane as emergency power backup.