compatibility - Will this charger/adapter work for my son's laptop?
2014-07
Katt
This question already has an answer here:
user2313067
I don't think it will be enough. As you can see, the original router has an output of 19V - 9.5 A (so 180.5W). The new one has an output of 19.5V -7.7A (so 150.15W). The new one isn't capable of delivering as much as energy, so the computer might not be able to function properly. Additionnally, 19.5V is slightly more than 19V so it might damage the computer (though I doubt that 0.5V would really be dangerous).
Ecnerwal
A perfect match would be if the input and output matched for both current (measured as amperage, and abbreviated as A) and voltage (V). As others have alluded to, multiplying the two results in a measure of power, or wattage (W).
In this case, since the second charger mentioned has a slightly higher voltage, and lower amperage, the total wattage is lower.
In general, you can get away with higher current, as what ever is charge will regulate the current (this is why you can use a high current iPad charger with an iPhone and not damage the phone). I'm not sure about higher voltage.
This charger might work (though it may charge the laptop slower than the factory provided model). Personally, I'd look for a closer fit in matching current and voltage.
MGOwen
The AC adapters for my 2 dell laptops wore out very quickly.
One supplies power but won't charge the battery (it's about 3 years old, the other is a bit newer).
Both have worn through to the shielding around the notebook connector and look like they'll be unusable soon.
Checking user reviews of the replacement adapter on Dell's own website, it appears they usually fail this fast. Apparently Dell does this deliberately to make money (their adapters sell for about 10-15 times what they cost to make). Same with replacement batteries.
I can see there are plenty of much cheaper ($50, not $150) compatible AC adapters on eBay. Does anyone have experience with these? Naturally I'm nervous a crappy knock-off could fry my notebook, but has this ever actually happened to anyone recently? Has anyone had a good experience? Can anyone recommend a good online seller (who doesn't charge nonsensical shipping costs to Australia, preferably?)
.
Update:
For anyone who's interested, I eventually went ahead and bought one on eBay from China that was claimed to be a genuine original Dell. It's likely a factory second or very good counterfeit, but it looks genuine and worked fine - charged the battery etc - but only for a year. I've since bought 2 more on ebay because, while one of the three failed in the first year, it's still cheaper to buy 10 of these than to buy one from Dell (and the dell one, I now know, won't last either). Further details here: Dell 1720 laptop replacement battery and power adapter if anyone is interested.
PaulWaldman
I don't know what series of Dell notebooks you have but I have had bad experiences. I've purchased a few 3rd party power supplies for Dell Latitude D series notebooks and they will not charge the battery. A warning message appears that the power supply is not Dell approved and subsequently the battery will not be charged.
Brettski
Sounds like you are pretty rough with your equipment. For the most part, yes third party adapters will work fine with your equipment. Even though they adapter manufacture says its for your model, you should closely check the voltage and amperage output of the adapter. Voltage should match exactly and amperage needs to meet or exceed the OEM adapter. Of course this does void any warranties, which probably isn't an issue with the age of the machine.
The usual difference between OEM and aftermarket adapters is that the after market adapters may not meet the required specs or provide clean power. Dirty power leads to strange behavior of failed devices.
I guess it really comes down to, how long do you want to keep your notebook. If it will be for a few years or more, go with an OEM. If only for a year, try out the aftermarket.