Can I use my laptop, which says 100-240V, in the USA?
I am planning to take my laptop to the USA. The adapter says input voltage is from 100-240V. However the cord connecting the adapter to the plug mentions 2.5A 250V.
Will the laptop work along with the charger in the US? Will the cord have any issue being connected to a US plug via an adapter?
Edit (25th Feb 2020) : Just to let everyone know, the laptop worked perfectly fine with an adapter. Thank you everyone for all the responses and the necessary edits to the post!
Best Answer
The ONLY relevant thing to check is the label on the power supply. It states "Input 100V-240V, 50/60Hz". Any outlet that provides voltage and frequencies in that range is safe to use.
That covers almost all countries and certainly the US which operates at 120V/60Hz. You may need a passive plug adapter (or travel adapter) since the physcial shape of the outlets is different. See https://www.worldstandards.eu/electricity/plug-voltage-by-country/ for a list per country.
Do not use any type of "transformer" or "AC power converter". While most of these are safe to use, some are not and there is no need for the extra size, weight and cost.
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Can I use 100-240V in the US?
So you don't need a voltage converter in the United States of America, when living in the United States of America. To be sure, check the label on the appliance. Some appliances never need a converter. If the label states 'INPUT: 100-240V, 50/60 Hz' the appliance can be used in all countries in the world.Do laptops support dual voltage?
Nearly all laptops/notebooks, tablets, phones ... on market today support universal household voltages around the world, from 110V to 230V/240V all we need is a tourist adapter (just for different plugs).Do laptops need a voltage converter?
If the voltage your smartphone charger or laptop (or any electrical appliance) uses is the same as the voltage at your destination, all you need is an travel adapter. Even if the shape of the outlet plug is very different, your electronics will be fine as long as the voltage is the same.Can I use my laptop in USA?
You can bring your laptop from India to US and it should work without issues in U.S. Pretty much all the power adapter/power cord will support Input 100-240V. In India you will be using 230v and in US it will be 110v.Why the U.S. uses a different voltage than some countries
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Answer 2
The number on the cord is a rating and represents the maximum safe voltage for the cord. It's like automobile tires. If you get an HR-rated tire rated 130 mph, you are allowed to drive slower.
That says nothing about the power supply; for that, you have to check the power supply. You did; it appears to be the typical multi-voltage power supply that'll work anywhere from Japan to the UK, with the right cord or adapter.
That cord looks like an "IEC C5" cord, which is readily available (mail order, at least) with any nation's plug on the other end. You can't necessarily expect to walk into any retail store and find it, especially now that Radio Shack is in decline.
I recommend a local cord instead of those hokey-dokey universal adapters from China, which do not have Underwriter's Laboratories or other NRTL ratings, and teardowns have shown are dreadfully unsafe.
Answer 3
You should be fine. The cord between the adapter and the wall doesn't have any sensitive electronics in it; it's just three (or two, but this photograph looks like three) metal conductors. As others have noted, the proposed use will not exceed the limits shown on the cord.
You'll need an adapter plug to be able to plug it in to a US wall socket, though. If it makes your feel better, you could instead buy a whole cord with a US plug at the other end, rated and tested for US house current.
Answer 4
Short answer: Yes. United States AC voltage is 120V 60Hz, which is within the input range specified on the PSU.
Also: Think about it. If they didn't, you would be reading about a lot of fried laptops all the time. Given that laptops are intended to be traveled with, it wouldn't make sense.
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