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69 votes
5 answers
475k views

Can I use a charger with more output amperage than the device needs?

I've just bought a portable battery, but the portable battery don't comes with an adapter for the house current; it only comes with a USB cable so I can charge it with my laptop. My mobile phone came ...
Jorge Fuentes González's user avatar
8 votes
6 answers
26k views

Charging a laptop though a USB-C power port with a low voltage/amperage

Let's say we have a new laptop with a USB-C port - like the new Macbook1 or the Chromebook pixel which, yes, are meant to be charged through these ports -, a good solar panel for smartphones (5V 3A ...
David Mulder's user avatar
  • 1,401
6 votes
2 answers
4k views

Does it use less power to connect to a tethered phone using USB or wifi or bluetooth?

If you are tethering to the internet through your mobile and your notebook is low on power you may want that connection to use the least possible power for your notebook. A USB connection will charge ...
chobok's user avatar
  • 254