Jump to content

Welcome to Geeks to Go - Register now for FREE

Geeks To Go is a helpful hub, where thousands of volunteer geeks quickly serve friendly answers and support. Check out the forums and get free advice from the experts. Register now to gain access to all of our features, it's FREE and only takes one minute. Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more.

Create Account How it Works

How critical is the amperage output of a powersupply to the health of

  • Please log in to reply



    New Member

  • Member
  • Pip
  • 1 posts
Would 3.25 amps from a laptop power supply hurt when the old power supply put out 2.25 ??

And if the wattage is higher than the old (65:vs 45) is that just making peak demand easier to meet, or can that hurt?

My 'antique' Lenovo's power supply died..

  • 0




    WTT Tech Teacher

  • Tech Academy Moderator
  • 897 posts

Hi lexoverrex, and welcome to our forums,



It might be worthwhile you having a look at this topic here:




But do bear in mind that your Lenovo will almost certainly have a different power requirement from the HP laptop mentioned in that topic.


Post back with details of your laptop ( model and serial number plus the details from the label on the original power supply /AC adaapter/charger) if you need further information on any of this.


Depending on the age of your laptop the voltage requirements will differ, I have seen them as low as 15V on some early models and as high as 20V on more modern ones.......... the vital thing is not to exceed the voltage specified, otherwise you risk a loud and expensive bang and damage to both the power supply, the laptop and possibly the mains wiring and circuits in your home or area of operation!




  • 0



    Trusted Helper

  • Malware Removal
  • 4,803 posts



There is no problem if the power supply can provide more amps only the voltage have to match. The amps value indicated on the laptop is the max consumption value that the machine will do.


The max amps value indicated on the supplier is the max value it can provide to the device connected to it without eventually burning or shutdown in case it have some protections...

  • 0

Similar Topics

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users

As Featured On:

Microsoft Yahoo BBC MSN PC Magazine Washington Post HP