Originally Posted by adam780930
Hi, my original ASUS power adapter has broken and I went online to get another adapter which is not an original ASUS one. This one feels way lighter and instead of output at 19V 4.72a that was on the one I used to have, this one is 19V 3.42a, I plugged it in and it does work, but I was worried that if I have different spec like this, will it damage my laptop? Thanks in advance!
The voltage is the same, which is most important. Secondly, the amperage is slightly lower on the new one than the original, which means the maximum charging power is smaller. When the battery is at lower percentage, it can be charged faster, which means your laptop is likely to draw more current when battery is low. My parents have a laptop that takes in 20V and the original charger was 20V 6A, and they have been running it with a 20V 4.5A charger for years now. Just don't do excessive gaming while low on battery and charging and you should be fine. If you want to be extra careful, when the battery is low, charge the laptop while it's powered off to minimize required power.
Also, watch for the charger, as it may heat up a bit more than the original if a lot of current is drawn.
For future reference: when getting a new charger/power adapter, always get one with same voltage, and same or bigger amperage. Incorrect voltage can damage the laptop, but the laptop will draw only that amount of current it currently needs, so basically if the laptop has specified "19V 4.72A" that means that 19V 4.72A charger is fine, 19V 10A charger is fine too, 19V 3.42A charger is fine as long as the laptop don't want to draw more than 3.42A at the timeEdited by Microx256 - 1/26/14 at 12:30am