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Ramer · ‎09-13-2013

Hi guys!

Is it okay to use the laptop with the baterry removed and plugged to the outlet? Will there be any problems doing this?

Flea0 · ‎09-13-2013

absolutely not. In fact, it will help your battery last longer, especially if you store it in a cool, dark place at about half charge. Just be careful not to bend the exposed battery contacts on the laptop.

ASUS G750JX -- i7-4700 - 16GB - 128GB 840 PRO SSD + 1TB HDD - Nvidia GTX 770M - 120Hz 3D glossy display

kingfish · ‎09-13-2013

hi ramer, i thinks it's ok to use that way. the machine will run with full power option. i'm doing it every night.but i have to use, recharge and drain the battery every once in a while for maintenance purposes. BTW im a 3D user not a gamer.

G751JT | 24GB | 2 x 1TB HDD | Nvidia GTX 970M | Windows XP

hmscott · ‎09-13-2013

Ramer, I don't think it helps/hurts to leave out the battery.

As long as you don't forget to run the battery(ies) in the laptop weekly to keep them charged to your desired level.

Bumping the power cable causing the laptop to lose power is depressing, that is what cured me of running without a battery 🙂

The charging circuit on the laptop is bypassing the battery if it is plugged in and charged. During intense CPU/GPU testing on my G750 while plugged in the battery remains cool to the touch while other areas of the laptop are hot/warm.

Many years ago I used to run without the battery in my laptops that would do it, but I didn't notice any increased battery life.

Keeping the battery in the laptop is probably the best idea.

UnfairAwesomene · ‎09-13-2013

Leaving out the battery is just very inconvenient especially if someone accidentally bumps out the power cord from the wall or yanks it from the laptop

UnfairAwesomene · ‎09-13-2013

How to keep your battery for charging past 80% or so? (so it will last many more cycles), keeping it charged at 100% is just slowly bricking the battery with no benefit for many users, other manufacturers have this option, but why not asus (or a software version would be useful I guess)

hmscott · ‎09-13-2013

UnfairAwesomeness wrote:
How to keep your battery for charging past 80% or so? (so it will last many more cycles), keeping it charged at 100% is just slowly bricking the battery with no benefit for many users, other manufacturers have this option, but why not asus (or a software version would be useful I guess)

The lithium ion charging cycle is complex, and the hardware/software to do it safely and efficiently are constantly being reviewed/improved.

I don't think we can assume we can outsmart the process by leaving the battery off the charger - and at what charge level should it be stored? 100%, 70%, 50%, less?

Likely as not Asus and the charging circuit hardware designers go to great effort to make sure the battery can remain in the laptop 100% of the time. It is the most likely operational mode for the end user, and has been for many years

What Asus has to say:
http://www.service.asus.com/#!battery-information/c1kun

More hits from the search that found that article: site:asus.com lithium ion battery charging
https://www.google.com/search?q=site%3Aasus.com+lithium+ion+battery+charging&ie=utf-8&oe=utf-8&aq=t&...

Here are a couple of articles that give a nice view into the complexity considered by the charging hardware designers:

http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

http://www.edn.com/design/power-management/4405282/Proper-Lithium-Ion-battery-charging-and-safety

And, one on long term storage of Consumer Lion batteries:
http://zeusbatteryproducts.wordpress.com/2012/08/22/5-best-storage-and-charging-tips-for-extending-l...

UnfairAwesomene · ‎09-13-2013

hmscott wrote:
The lithium ion charging cycle is complex, and the hardware/software to do it safely and efficiently are constantly being reviewed/improved.

I don't think we can assume we can outsmart the process by leaving the battery off the charger - and at what charge level should it be stored? 100%, 70%, 50%, less?

Here are a couple of articles that give a nice view into the complexity considered by the charging hardware designers:

http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries

http://www.edn.com/design/power-management/4405282/Proper-Lithium-Ion-battery-charging-and-safety

And, one on long term storage of Consumer Lion batteries:
http://zeusbatteryproducts.wordpress.com/2012/08/22/5-best-storage-and-charging-tips-for-extending-l...

Well technically it doesn't matter what % charge it's left at, it's what voltage (~40% for storage, ~80% is about a good point to have somewhat battery charge just incase and still have many more life cycles).

Not the point what exact % to the +/- 0.000001%, just that leaving it at 100% charged like the laptop does horrifically degrades the battery within months all for the sake of maximum electricity storage for that phase in your laptop's life that you are extra careful to not get any scratches or fingerprints on it.

I would love for an option to set it so it won't overcharge the battery (i'm considering 100% charge overcharging cuz it is what it is) without the inconvenience of taking the battery out with the security risk of losing power to the laptop if ac goes out.

hmscott · ‎09-13-2013

What laptop company keeps their battery charged at less than 100% long term, and makes that visible through their monitoring software to the end user?

UnfairAwesomene · ‎09-14-2013

hmscott wrote:
What laptop company keeps their battery charged at less than 100% long term, and makes that visible through their monitoring software to the end user?

Some examples from other manufacturers:

Samsung Laptop: Battery Life Extender
Lenovo's Power Manager

I would much rather have years longer on the battery life than to have it last longer, especially since I have it plugged in most of the time. What reason would it make sense to keep it charged at 100% for years when it's down to 50% capacity after 6-12 months, and dead within 18months, when it barely has been used for it's portability?

Using the g750 without the battery