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Can a laptop charge itself from its USB?
I just found this video on YouTube:
https://www.youtube.com/watch?v=91Gwmo-ZRRA
It shows the ultimate solution to a laptop battery that keeps running out. Basically, there is a laptop charger with one end that plugs into the charger port of the laptop and the other end plugs into the USB (Universal Serial Bus) port, since you can plug your mobile phone or your iPod in the USB and it recharges the battery, and if you were to charge the laptop's battery in such a way, you would, in theory, have infinite power for your laptop. Would that work in reality? I know it's Troll Science, but it seems a bit down to Earth to be fake, unlike anything else in Troll Physics.
9 Answers
- BomberLv 79 years ago
I can't believe I'm reading this of course it's not possible, you're talking about perpetual motion here
your phone charges off the power supplied by either the laptop battery or from the power supply when it's connected to the laptop what you're talking about is for the battery to charge itself via the usb port so the battery is using it's own charge to recharge itself what a ludicrous idea and as I said it's perpetual motion and as everyone know that is impossible
- Bassman1Lv 79 years ago
No ! Voltage/wattage/amperage is low for USB ports and high for a laptop power adapter.
Try it and fry the USB ports of the laptop.
- DnfLv 59 years ago
Hi,
Not all laptops chare from USB. But some devices like iPhone, tablets and iPod charge from laptop USB. Actually, laptop needs more power, which cannot be delivered through an USB interface.
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- Jamie GLv 49 years ago
No, there would be too much power lost from transferring the energy through the power supply. As well, the USB connection would be unable to output the same amount of energy as it receives.
- KarriLv 59 years ago
Nope, because most of the electricity would escape as light (display), heat and kinetic energy (hard drive).
- 9 years ago
- 9 years ago
how cool would that be, its hard to know if it would actually work unless you tried it, i guess.
Source(s): ctua
