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    need some advice quickly please

    have mislayed my charger for my advent which is 19v 3.1A would i do the laptop any harm if i put a 19v 3.42A charger in it. Please need advice quickly

    12 Comments

    Banned

    It will be fine

    Why the hurry? Are you mid fap?!

    Original Poster

    no the battery is about to die? think the charger was binned by misstake over xmas

    What is important is that the voltage is the same. The ampere rating is a maximum value that can be drawn so your laptop would draw a maximum of 3.1A out of the 3.42A. You MUST ensure that the polarity is correct though.

    Original Poster

    HOW DO YOU CHECK THE POLARITY?

    dougle34

    HOW DO YOU CHECK THE POLARITY?



    Here is a guide:

    support.radioshack.com/sup…htm

    It is important that you read the note at the bottom of the article. That is, your original adapter or the laptop may not specify the polarity as manufacturers discourage use of 3rd party adapters. If you can provide a model number of the laptop it may be possible to find the polarity from a search.

    Original Poster

    it is an advent 7083

    dougle34

    it is an advent 7083



    OK, thanks for the information. I can confirm that the laptop is supplied with a LiteOn PA 1700-02 power adapter. Looking at the image, I can see that the polarity is centre positive:

    http://www.pcrepairuk.com/laptop_chargers/big/liteon_pa-1700-02_1.jpg

    Using the guide I posted earlier, you will need to check that your replacement adapter is also centre positive. If it is, then there should not be a problem using it.

    Original Poster

    ok thanks the cahrger i have is the exact same with but has 19v 3.1A so it should be fine????

    Original Poster

    sorry but on the back of the laptop it says that it takes 19v 3.1A and from what i remember the charger said the same, the picture you posted says different? bigger Amps 4.74A?

    dougle34

    sorry but on the back of the laptop it says that it takes 19v 3.1A and … sorry but on the back of the laptop it says that it takes 19v 3.1A and from what i remember the charger said the same, the picture you posted says different? bigger Amps 4.74A?



    I thought I had explained that earlier. The current provided can be higher than what is stated on your laptop. Essentially, your laptop will draw a maximumj of 3.1A so if the adapter can supply more than 3.1A then it should be fine. The voltage MUST match though. If your adapter supplies < 3.1A then you could be heading for trouble since if you are using the laptop extensively then it may draw the maximum 3.1A but the adapter cannot supply it. As long as the adapter supplies a current equal or higher than the maximum that can be drawn there should be no problem. The polarity appears to be fine as I have checked that for you.

    Edit: See post 4. I thought I had mentioned it!
    Edited by: "ElliottC" 1st Jan 2010
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