ASUS G60VX (Battery at 99% Constantly)

[Leviti]

Hey all. Hows it going again?

The battery on my laptop is constantly reading at 99%. I always have it plugged in so the battery is never wasted. Before it always read at 100%. And i dont think it's gonna be hitting 100 since it says (plugged in, not charging). Anyone know whats up with the batt?

Thanks =)


P.S When not in any use should i be disconnecting the AC adapter from the laptop?

[Leviti]

/bump

[Mastershroom]

If you keep it plugged in all the time, it won't charge, and the battery will very slowly trickle away power. Unplug the laptop, let the battery run down a more significant amount, like 80% or so, and plug it back in. It should charge back up to 100% after that.

I've left my netbook plugged in for a few days now that I'm not taking it to class, and it's currently at 97%, not charging.

tl;dr - it's perfectly normal.

[Mr. Pedantic]

Mine doesn't charge until about 70% or so. It's to save battery life over the long term. Best practice is actually to take the battery out if you're going to be using it on mains power for a long time - I've had mine out for about a week continuously.

[Arld]

I'm having a similar problem, but rather vice versa.

I used my laptop with a battery in it, and no power plugged in. Then, it shut down to to being at a "too low capacitiy", and entered hibernate mode. I plugged in the power again, continued my session and it said that I should consider replacing my battery... but it's at 100% and charging.

I had this last time too, but it seemed to go away. Can't remember what I did in order to get away that problem. Here's a screenie.

Spoiler:

[Sgt. D. Pilla]

Leaving the battery in a laptop to charge is about the most sure fire way to ensure the battery doesn't last long.
Ideally when the battery is 100% charged you should remove it and continue to run off power while you can.
Then use the battery when power isn't an option.

Most warranties don't cover batteries and they instead use the warranty that the battery has from the supplier, those warranties often include a clause that "over charged batteries" aren't covered; and helpful tips such as "Don't over-charge a battery as it may reduce it's effectiveness over an extended lifetime".

but it's at 100% and charging.

That's an old faithful issue with Windows 7/Vista.
UPS's do it as well.

However oddly, not all batteries have the issue.

[Arld]

Alright, I'll try to keep the battery out as much as possible I guess. Wasn't aware of that issue. Cheers.

Thanks for the clarification.

[Mastershroom]

That's pretty much false. For starters, I've never seen any laptop manufacturer that doesn't cover their batteries for at least one full year...the only thing is, it's usually regardless of the actual laptop warranty, so if your laptop is covered for 3 years, your battery could still only be covered for 1.

Also, lithium-ion batteries are not damaged by staying plugged in. That's the whole point of the "99%, not charging" thing; once the battery is charged, the power stops trickling into it, which is why it will lose percentage over a few days.

If you're really paranoid, you can take out the battery as soon as it's done charging and put in the refrigerator, but real-world tests have shown that it makes a difference of a few single minutes of overall capacity after years.

tl;dr - there's nothing wrong with leaving the battery in after it's done charging, and no matter what you do, it will lose capacity over time.

If you want to learn more, ask the folks over at Laptop Forums and Notebook Computer Discussion

[Sgt. D. Pilla]

That's pretty much false. For starters, I've never seen any laptop manufacturer that doesn't cover their batteries for at least one full year...the only thing is, it's usually regardless of the actual laptop warranty, so if your laptop is covered for 3 years, your battery could still only be covered for 1.

And thats what I said...

Also, lithium-ion batteries are not damaged by staying plugged in.

Tell that to Acer support, Asus support, IBM, HP, and Acer warranty.

"99%, not charging"

99% is not 100%.
And as soon as .5% is depleted, it charges more.

there's nothing wrong with leaving the battery in after it's done charging,

I know dozens of people, end users and tech support that would call BS.

[*The.Doctor]

My laptop (IBM Thinkpad T41) always reads "99%, Fully Charged" while plugged in. The battery in it is crap though, only lasts maybe a hour and a half at most before its dead.... Can't complain for a free laptop though!

I have heard that leaving it constantly plugged in to AC with the battery in can shorten battery life after awhile, and that to maintain best battery life it should be completely charged, run completely dead, and then recharged every so often. Don't know how accurate that is though.