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Make Bruins Great Again
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Question about laptop charging
I've had desktop computers for 35 years (started with a Commodore 64) but am brand new to laptops.
Got a Lenovo with Win 11 that has a dedicated port just for charging.  Maybe I'm over-thinking it but, is it OK to have the power cable connected to the laptop but not have the power adapter plugged? Will the adapter drain the battery in the laptop? I very really thought about it with things like the cell phone because it gets unplugged when done charging. The battery in the laptop is a bigger deal.
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-------------------------------------- Joe See Porsche run. Run, Porsche, Run: `87 911 Carrera |
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08-07-2024, 04:28 PM
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I see you
Join Date: Nov 2002
Location: NJ
Posts: 29,876
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I've done that a few times without issue Joe. I'm not an EE but I don't see how current would flow back into charger.
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Si non potes inimicum tuum vincere, habeas eum amicum and ride a big blue trike. "'Bipartisan' usually means that a larger-than-usual deception is being carried out." |
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08-07-2024, 05:02 PM
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Registered
Join Date: Mar 2003
Posts: 10,312
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Not an EE either but with an unknown black box connected there has to be more of a chance of some kind of micro vampire draw than there is without the cable connected
Also when not connected there is no risk of dropping it just right enough to shove the connector in harder and break it internally. Has happened to me, got laptop with foot preventing screen/etc damage but the powee adapter was at hust the right spot to hit hard and broke the connector where it attached to the pcb etc fwiw Dell and their nbdos warranty rock 
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08-07-2024, 06:06 PM
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Make Bruins Great Again
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Quote:
Any EE out there?
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-------------------------------------- Joe See Porsche run. Run, Porsche, Run: `87 911 Carrera |
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08-08-2024, 05:10 PM
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Parrothead member
Join Date: Jul 2003
Location: Monmouth county, NJ USA
Posts: 13,818
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There shouldn't be an issue. Any type of DC charger like that is going to have a diode in it that would prevent any type of "reverse draw".
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Vinny Red '86 944, 05 Ford Super Duty Dually '02 Ram 3500 Diesel 4x4 Dually, '07Jeep Wrangler '62 Mercury Meteor '90 Harley 1200 XL "Live your Life in such a way that the Westboro Baptist Church will want to picket your funeral." |
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08-08-2024, 05:26 PM
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Get off my lawn!
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You need that laptops used in all movies now days. They never ever have them plugged in to anything, and can hack the FBI or CIA in just minutes. And they never have a low battery!
I have a Microsoft Edge laptop. It has a magnetic attachment to the charging port. I usually have it plugged in when I am using it as the screen is brighter. I doubt the charging port would ever draw power back out from the battery.
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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08-08-2024, 06:56 PM
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Max
Carrera
