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Replacing Laptop Power Supply: 18.5V 3.5A to 18.5V 6.5A - Safety Concerns & Short Circuit Risks

wieszok 28109 4
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
  • #1 6221439
    wieszok
    Level 1  
    I have a question, can I replace the power supply:
    INP: 100-240V, 1.6A
    OUT: 18.5V, 3.5A
    on
    INP: 100-240V, 2A
    OUT: 18.5V, 6.5A
    When I connect for a moment, I can see that the power supply is doing well (i.e. charging the laptop). However, I would like to ask if there is a greater probability of burning (than in the correct power supply) of the laptop during a short circuit?
    Thank you in advance for the answer
    Greetings
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  • #2 6221472
    ks_fenix
    Level 23  
    This new power supply can simply deliver more power to your laptop. It will not be a problem, because the laptop should take a maximum of 3.5A as in the original one.
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  • #3 6221476
    Mato3
    Level 14  
    Hello. The current you gave is the maximum load current of the power supply, if the load is greater, as in this case, nothing should happen. greetings
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  • #4 6221495
    Lutek49
    Level 36  
    There was already a similar topic. The supply voltages at the output are identical. Pay attention to the polarity of the voltage on the power plug so as not to connect it backwards (but the test has already passed - so everything is correct). The second power supply has higher current efficiency and should be good at powering the laptop and charging the battery. However, what will happen after a laptop short-circuit is just speculation without knowing the exact parameters of both power supplies.
  • #5 6278075
    krzysztofmaj
    Level 11  
    Greater efficiency of the power supply will certainly not hurt, it will heat up less, which will certainly extend its life.
    If you do a short circuit in a laptop, the damage is unpredictable
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