Can I Leave My Laptop Plugged In Overnight? Okay or Bad?

Being an early rising coffee junkie has its advantages such as staying fit and sticking to a schedule and working with the same pace and momentum the natural clock of the world is going through.

However, the question arises when you are going to bed to have some rest to charge your body and you would be wondering can I leave my laptop plugged in overnight? So that you can start your day without having to worry about pesky warning labels notifying you about low battery levels.

Surely, leaving your laptop plugged in overnight seems plausible and very viable for your next day’s work routine, but there are some things you need to consider before you can go ahead and charge your laptop overnight.

But to go through every detail, we need to have a little understanding of how a battery works and what are their types.

Types of batteries used in laptops

  • Lithium-ion
  • Nickel Cadium
  • Nickel Metal hydride

Lithium-ion Battery Cells

These are the latest form of battery cells used in traditional laptops, they are often preferred for their high-density storage capacity as compared to nickel-based batteries. 

These are commonly used nowadays in almost all forms of electronics which requires battery components due to being extremely safe and if your laptop has lithium-ion battery cells then it is safe to assume that you can leave your laptop overnight without having to worry about a fire hazard.

Nickel Cadmium Batteries

Nickel Cadmium is quite rare nowadays but usually is used in regions where temperature readings are extremely variable i.e too hot or too cold. Nickel Cadmium based batteries shine bright in extreme temperatures and tend to have a higher life cycle as compared to the latter in the list.

However, due to the memory effect, they have been deemed a second choice as compared to a lithium-ion battery because their memory feature requires them to be fully drained in order to complete a cycle, otherwise, the cycle is wasted which results in a drastic reduction of the life cycle of battery.

This reduction of life cycle resulted in battery dying quickly and then you have to invest in newer ones which might be a costly alternative.

Nickel Metal hydride

These are the ones that have lesser density storage capacity than lithium ions but are considerably safer than them. Moreover, these batteries don’t have a memory effect but do have a lower life cycle than nickel Cadium, moreover, they are significantly heavier than the former batteries mentioned.

Now that you have a basic understanding of types of batteries and how each works, let’s answer your question

Can I leave my laptop plugged in overnight? Or Longer

If you have a laptop that isn’t a decade old at least, then it is safe to assume that your laptop uses either Lithium-ion or a lithium-polymer battery. As explained above, Lithium-based battery cells arent affected by the memory retaining feature and you can safely keep your laptop plugged in overnight even if it reaches the maximum threshold i.e 100%.

Furthermore, the newer technology works by having the laptop stop taking power from the battery once it reaches its maximum charging capacity, and instead use the direct power from the charging adapter.

However, if that is not the case here, and your laptop has nickel-based batteries, then leaving your laptop plugged in overnight can be a fire hazard, as not only are they less safe than lithium-ion batteries but tend to get swollen and has a probability of exploding.

Note: Please check the manual of your laptop to know which type of batteries the manufacturer has included in it.

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Things to consider for safer and longer battery life

You should keep the following points in mind if you want to go on the safer side and have good battery life.

Ambient temperature

It is common knowledge that heat tends to depreciate the life of the battery especially when it’s charging, although keeping your laptop plugged in overnight might not affect the lithium-ion battery because it doesn’t have a memory effect but still it is advised not to charge your battery under higher ambient temperature is it might damage the internal of laptop hardware due to unnecessary heat generation.

Turning off unnecessary applications and connectivity features

Battery runtimes tend to get worn down due to prolonged use which is an inevitable fact, however, you can still increase the battery life span by turning off Bluetooth, WIFI options as well as turning down the brightness option to as minimum as possible to keep things running for longer period of time.

Choosing low profile power options

Power options like sleep and hibernation mode can be a better alternative than keeping your laptop awake at all times. This ensures your laptop uses a lesser battery and generates less heat which will prevent your battery from getting damaged over time.

Final Take

It is always going to be cautious about electronics that you are using as there is no guarantee which element will go wrong if you are not careful and having the knowledge beforehand can prevent a major mishap.

That being said, after reading the article carefully, I hope you have found all the necessary answers to your questions so that you can decide whether or not leaving your laptop plugged in overnight is suitable for you.

Personally, I would advise against it because I myself don’t keep my electronics whether it is my smartphone or laptop charged overnight because you can never trust these technologies over your health.

Stay safe and feel free to comment below if you have any queries.