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Possible Duplicate:
charging laptop with a diffrent manufacture charger
How can I tell if an AC adapter is compatible with my laptop? For example, does the voltage output have to bee the same, or just close? What power measurements matter?
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3
Possible Duplicate:
charging laptop with a diffrent manufacture charger
How can I tell if an AC adapter is compatible with my laptop? For example, does the voltage output have to bee the same, or just close? What power measurements matter?
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Any AC adapter is considered compatible with any device if it has all the following traits:
Of course, the shape of the plug in your device has to match the shape of your adapter so you can plug it in. If you can match all four criteria, you should be okay.
2This is the safe and correct answer. This thread is being used as a dupe target, and many of the new questions are about how far can I deviate from this advice. Since this thread is, itself, closed as a duplicate, new answers can't be added here. So let me add a few thoughts to better address the new questions. Voltage: Exact is guaranteed OK. I would suggest that ~3% should generally be safe as "close enough" (+/- 0.5V at 19V or 20V output). Current: equal or greater is guaranteed OK. Less can potentially work if its close and you don't push things. (cont'd) – fixer1234 – 2017-01-05T01:49:43.560
The OEM charger may be generic/over-spec'ed, and it's designed for max load and to power and charge concurrently. With a lower capacity charger, charge the battery while powered off before using it to operate plugged in, and minimize accessories that are powered from the ports. If an under-powered charger still gets hot, assume it's inadequate. One additional caveat: Some brands check for their own proprietary charger, so just a matching plug doesn't guarantee that the charger will work. – fixer1234 – 2017-01-05T01:50:24.680
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This has been covered before, but you need to ensure:
possible dupe - http://superuser.com/questions/36311/is-it-safe-to-use-a-power-supply-with-a-different-laptop
– ChrisF – 2009-10-10T14:35:14.143Which is itself a duplicate of http://superuser.com/questions/32372/charging-laptop-with-a-diffrent-manufacture-charger/
– ChrisF – 2009-10-10T14:36:24.0631Yeah, it might be a dupe, but we all used different key words to describe the same thing. – Jim – 2009-10-11T02:28:27.933