Can I Leave My Laptop Plugged In Overnight?

Wondering if it's okay to leave your laptop plugged in overnight? Read on to find out the potential risks and benefits, and get tips on how to extend the life of your device.
By Laptops Crunch Team | Updated On May 31, 2023
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Can I Leave My Laptop Plugged In Overnight?

Nowadays, a laptop is one of the primary requirements of every other person. Everyone needs a device to share their work bulk, whether a student, businessman, entrepreneur, employee, freelancer, or professor. People are in a rush in the morning, so they prefer to charge their devices at night, but can I leave my laptop on overnight? Most new laptop buyers don’t know how to use a laptop properly; because they lack basic knowledge about it. Often misuse of this device can lead to several expensive solutions.

For this purpose, the information regarding “Can I leave my laptop plugged in overnight” can help laptop users, especially new laptop owners, to use their laptops efficiently. For any further queries related to laptop safekeeping, you can visit Laptops Crunch’s tips section.

Can I leave my laptop plugged in overnight?

You just bought a new laptop, but you are still confused about how to charge your laptop or computer. Well, I have got your back. Through this article, you will be able to learn about setting up your laptop at night time.

A laptop consists of a battery, so to charge a laptop means you have to charge a battery. But what if you leave the laptop plugged in overnight? Well, for the safer side, you should avoid charging your laptop over the night. The main reason for not doing this is that it can damage your battery in every possible way. No laptop user wants to overheat or damage the battery by charging it overnight.

Battery Comparison:

The new laptops; manufactured nowadays consist of lithium-ion. For older versions, batteries were either nickel-cadmium (NiCad) or nickel metal hydride (NIMH). As far as lithium-ion batteries are concerned, they are safer to use. In the case of NiCad, manufacturers avoid its use in the new version of laptops. NIMH batteries have a long-lasting life but are gravely affected by the ‘Dreaded Memory Effect.’ Lithium-ion batteries are environmentally friendly and do not face the ‘Dreaded Memory Effect.’

Lithium-ion batteries rule over all other types of batteries in case of charge loss, which is 10% after every two months, much less than NiCad or NIMH. Lithium-ion or lithium polymer batteries are long-lasting and have a better performance ratio than NIMH OR NiCad. So, laptop manufacturers now prefer lithium-ion batteries so that these batteries can keep the laptop powered for a very long time. In this way, you can avoid the hustle of charging your laptop now and then. If you are planning to buy a laptop, my recommendation will be the latest lithium-ion batteries.

Charging the laptop with the help of trickle charge:

Leaving the laptop plugged in while off can give rise to a trickle charge. This process keeps the battery life healthy and maintains the recharge/discharge level. With the help of this phenomenon, it can maintain a low level of the current release from the mains. In this way, neither the battery nor the system is under stress. This process continues during the first time charge. This trickle charge does not impact the battery’s health. But if the cycle repeats every 24 hours, it can cause chemical damage to the computer’s battery.

Prime suggestions for leaving the laptop plugged in over-night:

You must follow specific directions if there is no option except to charge the laptop at night. This way, a laptop will be charged without damaging or harming the battery power. Below are my recommendations for leaving the laptop plugged in over-night:

  1. Avoid overheating the system.
  2. Do not place your laptop in a hot environment.
  3. Do not fully charge your battery daily.
  4. Choose lithium-ion-type batteries instead of other typical batteries. As lithium batteries are the latest and long-lasting.

Is it oK to leave a laptop plugged in All the time?

‘Is it ok to leave a laptop plugged in all the time?’ is one of the most frequently asked questions and, of course, a common mistake for new users. The battery is receiving electrical charges that can cause a build-up of heat inside the battery due to the constant supply of electrical charges.

According to experts, this causes wear and tear inside the battery. So, to avoid any damage to the battery, you should avoid its excessive charging. With time the efficacy of the laptop battery will be compromised. Therefore even if you use your laptop with extra care, its capacity will be affected.

What if I accidentally left my laptop plugged in overnight?

The new batteries, like lithium-ion, hardly harm or damage by overcharging effects. For older batteries, overnight charging would cause harm to the battery. If you accidentally leave the laptop plugged in overnight, there is nothing serious to worry about in this case. The new batteries are designed so that when they get fully charged; they stop themselves from receiving any further electrical charges.

In laptops with lithium-ion batteries, leaving the laptop plugged in overnight does not affect the battery. Even if the battery is 100%, the battery will not be affected by excessive charge supply. It is an exciting fact about lithium batteries. However, this intentional or unintentional overnight charging reduces the life span of a good battery.

Is it bad to keep laptop plugged in when fully charged?

For one night, overcharging does not harm the battery. However, performing such an act multiple times consistently can affect it. As I discussed above that, newer batteries are easier to use. How so, the standard users should not overcharge the laptop battery; this causes greater havoc to the battery.

Overheating is one of the main reasons for overnight charging. A laptop having an installed AC adapter should not be plugged in overnight when the laptop is not in use for a couple of hours or days.

The best way to charge your laptop battery is to plug in the charger at 20% of the computer’s battery. When you bring the battery percentage to zero, it can cause severe damage to the battery. Charging your battery on daily basis also affects the chemical composition of the laptop’s battery.

How long can you leave a laptop plugged in overnight?

Fully charging your battery or emptying it up to zero percent does not allow your battery to breathe longer. But if you stock the laptop battery to 70-80%, according to experts, it is an ideal condition for a long-lasting battery.


‘Can I leave my laptop plugged in overnight?’ is one of the valid questions that arise in the mind of beginners. In some cases, overnight charging does not cause any damage, like in the case of lithium-ion batteries. But in some cases, it can cause the overheating of the system, which damages the inner composition of the laptop’s battery.


No, you cannot leave your laptop overnight on charging as it can heat the battery system. It also damages the battery’s capacity to retain charges. So, removing the laptop from charging is suggested before going to sleep.

For dell users, they can safely leave their dell laptops for overnight charging as the dell laptop battery system is designed to consume the power the whole night without causing any significant damage. An overnight charge should not happen in the case of HP laptops.

No. It is not wise to leave your laptop plugged in all the time. It can cause a decrease in the efficiency of the laptop battery working.

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