G73 is never 100% charged...why?

Hey guys, i have this silly problem on my g73jh...im never able to fully charge my battery to 100%. It rarely goes up to 100% anyways and if it does it doesnt stay there long. My battery is pretty much always at 95 or 96% no matter how long its charged. I've had this problem pretty much since a month after i purchased it...any ideas or suggestions?

 

It's normal. The G73 battery is made to stop charging when it's near a full charge. Easiest way to "fix" it is to let it drain halfway and then let it charge back up but it's nothing to be concerned about.

 

I noticed this problem too when I tried to charge my G73JH up to 100%. Unfortunately, it's up to 99% only. I never tried testing it again because I've learned from batteryuniversity that charging your laptop battery to high percentage compromises the battery life span.

 

maybe like kuro said, its wanted to charge up to 95% to save the battery. In a any case, your laptop should never have the battery in if its always plugged. I wish i could do that but i get variations in electricity and sometime it cuts for a fraction of a second...

 

You can get a cheap UPS and solve that problem.

 

Mine is always plugged in. Should I just take out the battery? Does it really make a lot of difference?

 

Keep an eye on it. Even when you're not using the battery it will slowly lose charge. When it hits ~94% it will charge back up to 100% again. This is a battery life saving feature...there's no reason to be constantly charging the battery.

Or like others mentioned, you can run down the battery on purpose then plug it in to charge it back up if you're worried about it.

 

I also wanna know that.. I suppose you can, but what about the battery? If you don't use it, can it be damaged in some way?

I know that if you always use it plugged in you'll screw ur battery. I had a vaio that was always plugged in for like 2 years. Needless to say, now it has practically no battery...

 

Leaving the battery in will not affect it since it stops charging after a point so whether you have it in or not doesn't matter.

 

Not true. These batteries have a limited life whether you use them or not. Heat is the biggest enemy for speeding up degradation. Common consensus is you can slightly increase the life by removing the battery at ~40% charge and storing it in a cold, dry place (like airtight container in refrigerator).

To me, the savings in lifespan is not nearly worth the savings the battery provides as a UPS, so I keep mine in even though I rarely use it.

 

I have a six year old Dell Inspiron with its original battery, and I still get about 2 hours per charge with light use. I usually keep it plugged in, so I don't believe doing so really harms it. On the other hand, my fiance is on battery #3 on her six year old Sony Vaio (and that battery is now showing signs of failure), so I also believe Sony batteries are junk.

 

Mine always lingers around 95%. Like others said, just a way of conserving battery lifetime.

 

You need to calibrate your battery. In the Bios there is a utility under the power menu that will fully charge then fully discharge your battery. What this does is set the full and completely discharge limits on your machine. After it is complete windows will report the correct battery charge level. I would suggest doing it at night before you go to sleep or some time when you have about 4 to 6 hours of free time away from the machine. Hope this helps .

 

When using a laptop the battery should not be left in for long periods of time. The laptop will over time discharge the battery. Remove the battery – making sure that it is charged to 40% and store it in a dry, warm place. Ensure that it is wrapped protectively and nothing will be dropped on it.
The battery should be re-installed every 3-4 weeks and allowed to fully discharge. Leaving a battery in storage for longer than this without using could cause the battery to fully discharge as the circuitry of the battery itself consumes power.
Leaving a battery in a laptop while using an electrical outlet for long periods of time will keep the battery in a constant state of charging up and that will reduce the life cycle of the battery.
Remember that when you have removed the battery from a laptop while using with an electrical outlet – the automatic battery backup is no longer functional. Make sure to plug your laptop into an uninterrupted power source (UPS) not directly into an outlet or surge protector.

 

G50's suffer a similar issue as well. Myne tends to stay around 98%.

What happens on the software level is the battery level is calculated from the current charge and the current maximum capacity. When the battery is charged to the actual maximum capacity and this value doesnt match the current maximum capacity then you end up with an incorrect value.

I have actually had myne at 153%, though 101 to 105% happen from time to time. After a good charge cycle the battery recharges to a level (higher potential energy capacity) higher than the current maximum capacity and shows a value to high.

If your battery wears or at least appears to the charge controller to have a lower capacity and this isnt reported to acpi, windows etc, then an incorrect value is shown. In comparison to other laptops i have owned this seems to be very common with ASUS.

While this is a common solution in many devices and works, I recommend against doing it often to satisfy your battery gauge blues. The technique is actually to be used when someone isn't getting the run time out of the battery due to the battery reporting low levels and causing premature shut off. Not to fix just a couple of percent because ASUS doesn't like to recheck and report proper capacity values.

Lithium Ion batteries can only survive a number of full charge cycles 45-55 or more. They like to be topped off and this naturally causes some variation and in some cases bigger problems, such as a fake memory effect which li-ion batteries don't really suffer. Since your not missing a half hour of usable battery life and its more of an annoyance I wouldn't do it more than once every 6 months if even that.

The charge controller does determine a safe cut off point, but what I have experienced with the G50 doesn't appear to be the issue at hand. The charge controller is reading one accurate safe value while windows isnt being reported on changes

Unplugging for a few minutes to allow some discharge or even taking out and reinserting the battery are enough to get proper values to windows and or charge a not fully charged battery.

 

Wasn't telling him to do it more then once. I have only initiated this procedure 1 time on all 4 of my ASUS laptops and have had no problems since. I keep mine plugged in most of the time anyway.

 

Neither of these are true for the modern battery/charging systems used in the G73s...

Heat is a big enemy of Li-Ion battery life so they should be stored in a cool place.

The battery does not constantly charge when installed - if it did, this thread probably wouldn't have been started

 

but the batteru life will be much longer if you dont keep it pluged in