General discussion

Should I leave my laptop plugged in? ABC!

Over the years this question has been posited many times.

Here are two web links about this:
2. finds a test with the common battery we see in laptops kept at a full SOC (state of charge) for 3 years. The result is so little was lost but let's keep going.

My view is from the office where we leave laptops plugged in for years. It's not uncommon to cycle out a laptop that has been plugged and find the battery has no to little wear.

-> The first link covers a KEY FINDING. Ready?
A. "You Can’t Overcharge the Laptop’s Battery".

This was an issue decades ago but those laptops are dead and gone. If you have one from 20 years ago, treat it as you should for that era technology.

-> The second video along with other sites are finding that the SOC (state of charge) has little effect on life when we leave it at full SOC.
B. Leaving laptops plugged in for years does not degrade the battery.

Between jehugarcia's video, my own experience with 5 year on power laptops and other IT staffers in many companies, I'm calling this one DEBUNKED.

-> From the Howtogeek, other sources, where is the battery wear occuring?
C. Using the battery does wear it out. (sorry for the obvious finding here.)

And this is how we arrive at the new phone, laptop and other things that use Lithium battery rule today which is ABC (always be charging.)

I've seen over the years folk expend a lot of effort try to save their laptop battery life. Turns out it wasn't as tough as it seems.

Final thought: YES, do use your laptop's battery life extender option if it has it. It does work for all the reasons you'll find above. But removing the battery? You're working too hard with little to gain.

Post was last edited on November 16, 2017 8:56 AM PST

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leave my laptop plugged in

No, you should not leave you laptop plugged in like this it will be overcharge.

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That was something of an issue over a decade ago.

If your laptop overcharges then it is defective. Today's designs do not overcharge. If they did you would see thousands of laptop battery fires.

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Dell has software on their machines Dell Power manager

that does a sort of virtual charge as it control the charge to preserve battery life. The battery gage shows like 75% but says plugged in not charging. Mine remains in that state always.

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Dell Command | Power Manager User Guide Table of Contents

Accessing the Software
To open the Dell Command | Power Manager user interface, click the Windows Start button, and then do one of the following:

Click Control Panel > Dell Command | Power Manager .

Click Control Panel > Power Options , and then click Dell Command | Power Manager in the left pane.

Enter Dell Command | Power Manager in the Search programs and files field.

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no u should not

leaving a laptop plugged in non-stop could ruin the battery's health in the long run

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You may be thinking of very old laptops.

Last year we moved out an over 5 year old laptop that had been plugged in for over 5 years. The battery was close to new. This has happened so many times that it's clear among other tests that unplugging isn't needed and also it could let the battery fully deplete which isn't good either.

Time to re-evaluate those old advice articles?

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Use your laptop while charging

I'm the founder of backdez LLC
If you do that you waste your time.
If you use your laptop while you are working then no damage happen.
Don't worry use your laptop in charging.
Don't waste your time guys...

Note: Unrelated link disabled by moderator.

Post was last edited on January 21, 2018 10:41 AM PST

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use your laptop while charging

I bought a brand new HP tent portable computer these days and also the woman within the store told Maine that it's harmful to the battery to use the portable computer whereas it's blocked in. is that this true? i have never detected regarding this anyplace before though to be truthful I reasonably ruined my last laptop's battery

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Think about it.

ONE PERSON tells you this and no one else. Today's laptops, unless you get a bum one allow use of the laptop while charging, on mains and more.

As to the last battery, they do wear out. You did not supply details. It is possible to wear out a battery in a year with daily battery use and charging at night. This is where ABC rules. It gives the battery a break and extends the battery life span. Again, there is old advice about laptops from decades ago. Those ideas apply to machines long gone.

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You shouldn't leave your laptop to charge all days because it will affect your battery in a few months!

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That was debunked. Today we don't have machines that overcharge. Our latest laptop has settings to extend battery life as well.

Time to catch up. There's a lot of old information still on the web about this.

Dell for example:
"On a dell computer, right click on battery icon in tray
Click "Dell Extended Battery Life Options"
You you see an "Desktop Mode" Tab, click on it.

Enable "Desktop Mode""

If you find folk that tell you otherwise, they are out of date on the topic.

Post was last edited on February 8, 2018 7:45 AM PST

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I leave mine plugged in.

Lithium ion batteries degrade no matter how you use them. But, I work on computers and often get laptops in that have broken and the owner leaves them sitting with a discharged battery for many months. SOMETIMES these come back from the dead but usually the battery is toast. Most people will be ready for a new unit by the time the battery is dead anyway. Don't worry about this and run it down to 20% once a month if you are really worried and you won't hurt it one bit.


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May Be

Leaving laptops plugged in for years does not degrade the battery! I think this statement is debatable,, some people think leaving laptops plugged in can degrade the laptop battery..

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Over charging

Charging automatically stops when battery is full.
But overcharging can reduce battery life... this is what i heard.

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If you find a laptop overcharging.

You have found a defective laptop. Not one laptop today does this.

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More about ABC and Phones.
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No problem

I have the same laptop for 8 years, its always plugged in unless I am on a move. The battery dies two months ago. There was nothing wrong with it, it just stopped charging. Until then it worked just fine for 8 years.

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That's well beyond the expected life span.

It did great!

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Should I leave my laptop plugged in?

While we talk about new gadgets and software all the time, we often ignore the batteries that provide the juice to power them. Similarly, our laptop batteries are one of the most important parts that often get ignored in the high octane discussions involving RAM and GPUs. Still, some battery-related questions keep on popping up regularly — Should I keep my laptop plugged in all the time? Should I drain my laptop battery completely before charging?

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Only drain if you want to age your battery.

The drain the battery advice is for decade plus laptops with NiCAD batteries.

You have old advice that does not apply to today's Lithium batteries.

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Most portable computer batteries square measure either lithium-ion or lithium-polymer. These batteries square measure designed to resist varied charge cycles. These batteries can't be overcharged, which implies that as before long as they're 100 percent charged, they stop charging. These batteries stop receiving energy that is bypassed on to your laptop’s power offer. So, keeping it blocked in won’t hurt your battery and cause abundant distinction to the battery life. But, there square measure another important factors that we’ll be discussing later.

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Leaving a laptop plugged in

This is a question that I wonder about too. I rarely leave my laptop plugged in for long periods of time, from fear of not wanting it to overcharge. I would think that charging the laptop continuously after it's fully charged can eventually have a negative effect on its battery life. I'd recommend avoiding it if possible.

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The overcharging issue was on laptops over a decade ago.

If you have such an old laptop, it's not a bad idea to leave it off the mains.

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do not keep your laptop plug in all the time

no, i won't recommend you for that

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Given how much the designs have changed, Tell why not.

The last few years have the new laptops giving us options to hold the battery level at less than 100% so beyond our experiences with 5 years and more in the offices with laptops being left plugged in and batteries coming out at 80 to more per cent full capacity, why not?

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Save Your Battery


Lithium ion batteries need to be kept above 2% charge. If you discharge them completely it shortens their life.

Like wise if not using your laptop for some time the battery will discharge over time if not pluged in. Lithium Ion batteries are best stored at or above 85% charge.

I deal mostly with Dell Latitude laptops on Docking Stations which have 3 stages of charging being 1/, To 80% bulk charge 2/. From 80 % to 100% Trickle charge 3/. At 100% float charge ie When the battery drops below 100% it is recharged to 100%

My experience with non original laptop batteries has been they are a mixed bag. Some as good as the original battery & some that are substandard from day 1.

Look for a non original laptop battery; buy one with 1 year to 3 years warranty in writing so if it fails it will be replaced.

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