Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Can I use 20v charger for a 19v laptop?

19 Feb 2017   #1
unko

Win7x64
 
 
Can I use 20v charger for a 19v laptop?

Hey, I have a 20v 8.xA output charger from a heavy working station laptop that I'd like to use for a small laptop originally using a 19v 2.1A charger.

From what I read, it should be OK. But I'm quite bad at electricity and dont wanna ruin my gear So please tell me! Thanks.


My System SpecsSystem Spec
.
19 Feb 2017   #2
Lance1

Windows 7 Ultimate, Service Pack 1, 64 bit
 
 

Just for a bump.. Don't! If you have no idea what you're doing then stop! But it dose sound like you may.. Wait for someone to jump in that has more knowledge about voltage and amps. Just my two cents.
My System SpecsSystem Spec
20 Feb 2017   #3
unko

Win7x64
 
 

I read that 20v is just 5% more than 19v and therefore it's OK..
My System SpecsSystem Spec
.

20 Feb 2017   #4
mitchell65

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Quote   Quote: Originally Posted by unko View Post
I read that 20v is just 5% more than 19v and therefore it's OK..
You don't say where you read that but to say that "therefore it's OK" is absolute nonsense. I'm surprised the connector on the charger marries up with the port on the lappy! Use the correct charger for the laptop make and model.
My System SpecsSystem Spec
20 Feb 2017   #5
torchwood

W7 home premium 32bit/W7HP 64bit/w10 tp insider ring
 
 

Most laptop batteries can be "overvolted" but NOT to extremes.
Mine is 11.1 from 10.8

If you look at replacement battery specs compared to original youll find that there are slight differences.
Not that high up the scale thou.

Roy
My System SpecsSystem Spec
20 Feb 2017   #6
fireberd

Windows 10 64 bit
 
 

Its up to you, but I wouldn't use anything except the OEM charger on a laptop. The laptop may not be able to accept a higher voltage, even 1 volt.

I've seen a lot of musical effects boxes smoked because the correct power supply or a sloppy after market power supply was used.
My System SpecsSystem Spec
20 Feb 2017   #7
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot
 
 

I have to agree with everyone in the thread. Even though it's only one Volt, it might be enough to overvolt the regulator (though this is rather unlikely). The thing you would have to worry about is the extra heat in the regulator circuitry from the excess voltage. Over time, the excess heat and voltage can cause the regulator to fail.

Note that the laptop will only draw as much amperage as it needs from the supply. 8 Amps seems a little excessive for a power supply. It must be the size of a brick.

A good rule of thumb is to always use an OEM power supply for your laptop. They are a little more expensive than a generic, but they are worth it. And really, do you want to damage your laptop with a non standard charger?

Quote:
I've seen a lot of musical effects boxes smoked because the correct power supply or a sloppy after market power supply was used.
Lol, I know fireberd. I just did it yesterday.
My System SpecsSystem Spec
21 Feb 2017   #8
Megahertz07

Windows 7 HP 64
 
 

Why do you want to replace charges? A most powerful wont improve anything.
There are many other factors to look.
Is the connector exactly same size?
Is the connector polarity the same?

The less important thing is the 20V. Inside the laptop there is a switching power supply to convert the input voltage into battery charge voltage, +5V, +12V, etc.
My System SpecsSystem Spec
22 Feb 2017   #9
MourningStar

Microsoft Windows 7 Home Premium 64-bit 7601 Multiprocessor Free Service Pack 1
 
 

Quote   Quote: Originally Posted by unko View Post
I read that 20v is just 5% more than 19v and therefore it's OK..
great! let us know how it went.
My System SpecsSystem Spec
22 Feb 2017   #10
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

From post #1.
Quote:
From what I read, it should be OK. But I'm quite bad at electricity and dont wanna ruin my gear So please tell me! Thanks.
The answer is simple.
Just use the proper OEM charger that was designed for the laptop.
What that does is eliminates all the tests and guess work.

Surly a needed laptop is worth the proper charging method.

Jack
My System SpecsSystem Spec
Reply

 Can I use 20v charger for a 19v laptop?




Thread Tools




Similar help and support threads
Thread Forum
Using a different charger for laptop?
Hello, my lenovo charger broke. It charges but the wire has to be in an angle and if I move it stops charging. I have a second charger for laptop. The charging port fits in perfect. Here is the specs of my charger Output 20V - 3.25 A Specs of other charger (Really old Toshiba ~ 2007) ...
Hardware & Devices
Laptop charger
I have a laptop in which the charger 'pin' (to plug into laptop) seems bad. It's a bit loose when I wiggle it and when in the laptop, the cord has to be positioned just right for it to charge (it seems to lean the pin to where it can charge). I'm not sure if it's the charger or the port. The...
General Discussion
When putting in laptop charger, laptop goes up to 80 degrees celcius
Why when i put on my laptop charger laptop goes up to 80 degrees celicus It gets really hot but when i take it off it goes down
General Discussion
Best portable Laptop charger out there for under 70.00
Well herro there :3, Anyways YO 8D Im looking about for a portable charger for my TabletPC (Fujitsu Lifebook T4215) and yeah i know it's old but It works pretty well i will say abeit one big problem it has It has HORRIFIC Battery life as in i can charge it to the full 4 bars of it's battery...
Hardware & Devices
Can HP charger be used for Gateway laptop?
My roommate's large 17.3" Gateway NV9 laptop had its charger die (no power light) so he insists he can use my smaller 10-year-old HP 510's charger with no problems. I'm guessing his uses more power than mine so could burn out or otherwise mess up my charger. What do you think? The specs are...
Hardware & Devices


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 15:24.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App