Using a laptop without the battey. Is it ok?

21 replies
Found 20th Dec 2008
It isn't very often i take my laptop out of the house. So i have decided to take the battery out and put it away and instead, use the mains plug to power the laptop. Can doing this do any harm to the laptop?

Thanks in advance

Hannah

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21 Comments

Exactly what my wife does.

Banned

As far as im aware...Its Perfectly OK.

Using Mains to power laptop has its benefits as it increase your battery life span

:thumbsup:

Also, I would charge and discharge the battery every once in a while. This is done by having it in your laptop and switched on (without mains lead), then just leave it until it runs out. After that recharge it again.

I do too, my first laptop I didnt, and mainly used it in the same place (never used the battery but still had it inside) a year later needed the laptop outside, and the battery died after 5 mins. Hopefully by storing the battery outside and charging it when i need it, it should last a bit longer.

Banned

perfectly ok. In fact I have been told that leaving the battery in all the time whilst plugged into the mains shortens the battery life considerably.

You will kick yourself however when you do need to take your lappy out and you leave the battery behind.

Banned

Jumpingphil;3816366

You will kick yourself however when you do need to take your lappy out … You will kick yourself however when you do need to take your lappy out and you leave the battery behind.


Not if you store your battery in your laptop bag ;-)

csiman;3816501

Not if you store your battery in your laptop bag ;-)



That would be too sensible.

[CENTER]yes that's fine my oh does it all the time![/CENTER]

[CENTER][IMG]i248.photobucket.com/alb…jpg?t=1229766684[/IMG][/CENTER]

Banned

Jerry786;3816237

As far as im aware...Its Perfectly OK. Using Mains to power laptop has … As far as im aware...Its Perfectly OK. Using Mains to power laptop has its benefits as it increase your battery life span:thumbsup:



csiman;3816315

perfectly ok. In fact I have been told that leaving the battery in all … perfectly ok. In fact I have been told that leaving the battery in all the time whilst plugged into the mains shortens the battery life considerably.



Thats all you ned to know :thumbsup:

Banned

Jumpingphil;3816548

That would be too sensible.


LOL - Mine is in a cupboard :oops:

thats what i was trying with the acer i have,not using the battery and it keeps crashing,got told on here that i need to use the battery too as mains alone isnt powerful enough for it

csiman;3816315

perfectly ok. In fact I have been told that leaving the battery in all … perfectly ok. In fact I have been told that leaving the battery in all the time whilst plugged into the mains shortens the battery life considerably.



thats happened twice to me now icant use it with the battery at all, should have learnt from the first time. so it's probably for the best to use without the battery as long as you can

Banned

Mardyass;3817161

thats what i was trying with the acer i have,not using the battery and it … thats what i was trying with the acer i have,not using the battery and it keeps crashing,got told on here that i need to use the battery too as mains alone isnt powerful enough for it


yep - saw that thread but didnt agree at all. The mains supply is loads more powerful than a battery.

power cut is all i ever dred

Yep' I remember reading on this, it suggested you store your battery at 40% charge to maximize its life.

csiman;3817592

yep - saw that thread but didnt agree at all. The mains supply is loads … yep - saw that thread but didnt agree at all. The mains supply is loads more powerful than a battery.




think amps

There was something recently with the macbook, saying that if you ran the MB on just the mains, it reduced the speed and processor of the laptop by something as large as 40%. I'm not sure this if this is just macbooks, but since everyone else here seems to do it, I guess you're fine.

csiman;3817592

yep - saw that thread but didnt agree at all. The mains supply is loads … yep - saw that thread but didnt agree at all. The mains supply is loads more powerful than a battery.



Not true, my mains adapter is 20V, 3.25A, giving a maximum output of 65W. According to Intel the CPU is a 31W TDP package, so that potentially only leaves 34W for everything else when its maxed out. In normal circumstances thats probably okay, but take a scenario where your reading from a bus-powered USB hard drive and burning to a DVD, whilst charging your phone from the USB (each USB port is intended to supply 5W power) - add to that the power consumed by the display+backlight, motherboard chipset and two memory sticks and the 65W will easily be exhausted, resulting in instability. A Li-Ion battery has low internal resistance and each cell can give out a good few amps of current when required (hence why they are used in electric sports cars etc), substantially more the PSU brick can give...

Banned

jah128;3836002

Not true, my mains adapter is 20V, 3.25A, giving a maximum output of 65W. … Not true, my mains adapter is 20V, 3.25A, giving a maximum output of 65W. According to Intel the CPU is a 31W TDP package, so that potentially only leaves 34W for everything else when its maxed out. In normal circumstances thats probably okay, but take a scenario where your reading from a bus-powered USB hard drive and burning to a DVD, whilst charging your phone from the USB (each USB port is intended to supply 5W power) - add to that the power consumed by the display+backlight, motherboard chipset and two memory sticks and the 65W will easily be exhausted, resulting in instability. A Li-Ion battery has low internal resistance and each cell can give out a good few amps of current when required (hence why they are used in electric sports cars etc), substantially more the PSU brick can give...


well explained. I'm clear on it now thanks.

Luckily, my acer T7500 runs fine without the battery in.

You should leave your laptop battery in the laptop. One reason is as someone already mentioned is if in case there is a power cut or your adapter is affected. Think inbuilt UPS.

Li-Ion have a finite re-charge cycle. Somewhere around 1000 FULL-charge cycles. Charging from 95%-100% is not a FULL cycle. Charging from 0%-100% is. When you keep your laptop plugged into the mains the battery will charge up. However, when it reaches full charge it will stop charging. During this time and after the battery is fully charged the laptop will be running off the mains.

Li-Ion batteries will lose charge gradually over time. Therefore after a certain threshold the battery will start charging again.

I have a Dell D410, which I have had for around 3 years. The battery (6-cell) can still last 4hr's if I disconnect it from the mains.

Taking the battery out and leaving the battery in storage should theoritically prolong it's life a bit more. But then you lose the UPS functionality and leave an area of your laptop exposed.

Good idea to invest in a good surge protector as well.
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