Is an HP 19.5V 6.15A 120W adapter compatible with HDX18?

[petriedish]

My HDX18's original AC adapter died this week, and I've ordered two new genuine HP adapters with the exact specifications that I need. However, my web/graphic design business is run solely from that laptop and I have client work I need to attend to while I'm waiting for my new adapters to arrive. I have my client files backed up externally but no one's laptop that I can borrow in the meantime has the software I need to do my work. A friend sourced out for me a 19.5V 6.15A 120W adapter to borrow, but the specs on my original adapter are 18.5V 6.5A 120W. Will the difference in volts and amps cause me any problems (damage to my laptop or the adapter) if I use this borrowed adapter with my HDX18 for a week or two?

[banhien]

Hi,

It should be ok to use - normally machines can accept plus or minus 5%-7% for voltage.

Regards.

[HaggisCat]

I have had a few of the HDX machines over the years and have also rebuilt a couple.

 It depends what laptop the other adapter is from and if the other laptops hardware is similar and if the BIOS is the same type.

 There is a circuit board in the adapter that communicates with the laptop to let you know when the battery is fully charged, what percentage of the battery is left, whether or not if it's plugged in to the charger or not etc.

 Chances are nothing will happen at all, I plugged in my adapter on one of my HDX machines from my G61 and the HDX didn't see it at all. It was outputting 19.1 volts at 4.5 amps.

 So the question is, will it hurt the HDX, probably not, but I am not going to give you the green light either. There really isn't anyway of knowing for sure _ it's not just a voltage issue

[Mista B]

Good chance but as above the newer machines can be fussy.
If the loan charger is a Smart series hp charger the chances are higher as they adapt voltage & are designed for better compatability.. Charger itself is quite basic but the notebook may dislike what it sees.
Should be safe to try if nothing better comes along.

[petriedish]

Got some info on the loaner HP AC adapter - Part: 644699-003, Replace with HP spare: 645156-001. Does that give any more insight as to its compatibility with my HDX18?

[Mista B · Accepted solution]

that a smart charger, seen same HP spare code on an elitebook charger & have used that in older 18.5v ok.
Safe to try.