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    Is it ok to use the smaller 65 watt charger for my 15" lenovo???

    Discussion in 'Lenovo' started by Blue Diamond, May 8, 2008.

  1. Blue Diamond

    Blue Diamond Notebook Evangelist

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    because i left mine at home and my friend only has the 65 watt charger, mine came with a 90w charger... is it ok to use his or can it damage my laptop?
     
    Blue Diamond, May 8, 2008
    #1
  2. masterchef341

    masterchef341 The guy from The Notebook

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    it won't damage your laptop, as long as you aren't doing intensive tasks, 65 watts should cover you. the worst thing that will happen is that you turn out to be using more than 65 watts, so your battery will have to cover the remainder. the worst case scenario is no different than if you were on the battery. but you can charge it while its off with 65 watts. may take longer to charge, and you can also run it while on.
     
    masterchef341, May 8, 2008
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  3. Blue Diamond

    Blue Diamond Notebook Evangelist

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    awesome thanks
     
    Blue Diamond, May 8, 2008
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  4. ssnseawolf

    ssnseawolf Notebook Consultant

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    I second masterchef341's well-said answer. I'd add that the chances of you using more than 65W are very, very unlikely, unless you're simultaneously flogging the CPU, screen and graphics card.
     
    ssnseawolf, May 8, 2008
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  5. kltye

    kltye Notebook Guru

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    Has it really been proven that the battery "will cover the remainder" if the system needs more than 65 watts? Just seems a little ridiculous to me, and I've never ever heard of any laptop using AC + battery to run it.
     
    kltye, May 10, 2008
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  6. Renee

    Renee Notebook Virtuoso

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    I have a maxed out t61p. I have the 90 watt adapter at home and the 65 watt adapter at work. It works absolutely fine.
     
    Renee, May 10, 2008
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  7. LaptopGuru

    LaptopGuru Notebook Evangelist

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    The battery just charges more slowly.
     
    LaptopGuru, May 10, 2008
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  8. Renee

    Renee Notebook Virtuoso

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    exactly.....
     
    Renee, May 10, 2008
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  9. plim

    plim Newbie

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    What about the converse? My wife has the T61 14.1" ws with integrated graphics (65 W charger) and I have the T61 15.4" ws with discrete graphics (90 W charger).

    Can my wife use the 90W charger on her T61? will the extra wattage "kill" the battery or overload the circuits?
     
    plim, May 12, 2008
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  10. Renee

    Renee Notebook Virtuoso

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    No. It won't hurt. Ohms law is a wonderful thing.

    Consider that a city's power mains have huge amounts a wattage available. But a light bulb only draws as much as is it draws at a given voltage.
     
    Renee, May 12, 2008
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  11. biryets

    biryets Newbie

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    You should be worried about the charger and not the laptop.
    Its the laptop that determines how much current flows though the charger.
    If the charger is not up to size, it will overheat and possibly be permanently damaged.
    Having said that, The charger is specified to operate at full power at the maximum ambient temperature.
    Having said that, you should be fine.
     
    biryets, May 12, 2008
    #11