Batteries are the embedded power-source of a component such as a notebook. It is composed of cells of chemical elements that store energy.

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129
votes
9answers
53k views

Is it better to use a laptop on battery or on AC power?

When I'm at home, is it better to use the laptop plugged into AC power, or with just the battery, for the overall battery life?
20
votes
8answers
961 views

What are some good practices for making sure my laptop battery serves its full life?

Basically, I'm looking for some do's and don'ts. Is it bad to keep my laptop plugged in when I'm not using it (majority of the time)? Is it bad to plug it in once I've finished using it (with it ...
13
votes
8answers
7k views

Do newer laptop batteries still need to be drained before recharging?

10 years ago when I was doing hardware support it was best practice to fully drain a laptop battery prior to recharging in order to maximize its life. Is this still the case or can a battery now be ...
15
votes
3answers
3k views

Are notebook batteries generally hot-swappable?

I have a new HP Compaq 610. Most of the time I use it plugged and with the battery removed, to avoid wearing it. Sometimes I need to move it to somewhere else - currently I hibernate the machine, move ...
6
votes
5answers
8k views

Battery charge suddenly drops from about 25% to 6%

I own a Lenovo Y500 series laptop. The battery being an year old lasts only 1 hour. But the strange thing is that, when the charge comes down to 25-20 it drops to 6%(critical battery level) in a ...
3
votes
2answers
15k views

Laptop battery charge management software [closed]

I work on a HP laptop plugged in most of the time, and after few months the battery went off-duty. Of course, I could remove the battery each time the laptop is plugged and place it each time I must ...
5
votes
8answers
48k views

Is it safe to operate a laptop without battery?

I know it's 'unsafe' in terms of data loss but I noticed motherboards still have some of their circuits on power when they are plugged in [e.g. a circuit that must wait for power-on signals is ...
19
votes
8answers
808 views

Is a UPS a good investment for a home machine?

Is it worth the money to invest in a battery-backed UPS unit for a home machine? Or is it a waste of money? The purpose of the UPS would be to prevent a "meltdown" of the computer due to bad power ...
6
votes
2answers
3k views

Is there a way to execute a program on power events?

I'm basically looking for a way to execute an application when my laptop transitions to battery power and, similarly, when it returns to AC. Is there a built-in hook in Windows or a third-party ...
3
votes
1answer
2k views

Battery icon missing from task bar

I used to have an icon on the Windows Vista taskbar showing the battery amount remaining (laptop). It has mysteriously vanished. How can I get it back? I followed the Windows FAQ (see How can I hide ...
1
vote
3answers
3k views

Notebook computer battery says: plugged in but not charging with no further information. Is the battery bad already?

My 1.5 year old Dell Studio 15 notebook computer has a battery and I keep it attached to the notebook but 98% of the time I just plug in the power adapter. Lately when I unplugged the power adapter, ...
12
votes
3answers
14k views

Is it OK for the laptop to always be plugged in? [duplicate]

Possible Duplicate: Is it better to use laptop on battery or on AC power? If I stay near a power source is it recommended to always have my laptop plugged in? Or should I use the battery ...
14
votes
2answers
27k views

Can I use a charger with more output amperage than the device needs?

I've just bought a portable battery, but the portable battery don't comes with an adapter for the house current; it only comes with a USB cable so I can charge it with my laptop. My mobile phone came ...
6
votes
4answers
3k views

Control charging and discharging of laptop battery

Just heard that if Li-ion battery is kept at 40~60% charged, its lifetime will be longer. Is this correct? If so, are there some applications, respectively for Windows XP, Windows 7 and Ubuntu, that ...
4
votes
3answers
7k views

Is it safe to replace a 4400mAh laptop battery with a 8800mAh battery?

I have an Acer Aspire 5536G. My battery is having problems so I am thinking of replacing it. I have searched online through many sites and I found some good deals. However, currently my laptop has a ...
3
votes
3answers
22k views

Laptop battery: is voltage really important to respect?

I got an Acer Aspire 5100 and I just bought a new battery (after the stock battery just died yesterday). But I saw something after buying and I'm wondering whether it's really important or not. My ...
9
votes
6answers
13k views

What is the impact of leaving a laptop in “sleep” mode (while on battery power)? [closed]

How much battery would leaving my laptop at "sleep" mode consume? is the consumption low enough so that it would be safe to leave the laptop sleeping at nights regularily and using it tommorow? ...
4
votes
1answer
769 views

Storing a laptop for a month

I won't be using my laptop for a month. I remember I let a laptop sit all summer and the battery failed. How do I store a laptop and battery properly?
3
votes
2answers
407 views

Laptop Won't Boot

I have an HP Pavilion dv2000 laptop with me and it won't boot up. I hook it up to the charger and press the power button and it's completely unresponsive. I've tried holding the power button down but ...
2
votes
3answers
376 views

Increasing Laptop Battery Service Life [duplicate]

Possible Duplicate: What are some good practices for making sure my laptop battery serves its full life? I use my laptop as a replacement for desktop. I generally use it for 6 to 7 hours a ...
0
votes
3answers
7k views

Laptop Battery does not show true charging level

My laptop has a 6 cell Lithium Ion Battery. Even when the battery is fully charged it shows the battery charge status at 0%. As a result if there is a power loss (when I want to move the laptop from ...
80
votes
5answers
8k views

Why are my games slower on battery power, even with the power plan set to High Performance?

My laptop is capable of running most games on high settings at decent frame rates. However, if the power cable gets unplugged while I'm playing, the game immediately starts slowing down, even if I'm ...
34
votes
8answers
7k views

How can a CMOS battery store data?

How does a CMOS battery store information on it? I know it stores information such as the time, date, passwords and drive configuration, but how? How can a battery store data?
15
votes
4answers
6k views

Can I run a computer using DC power?

I always thought that using a conventional UPS with a PC is highly inefficient. Power goes from AC -> DC -> AC in UPS and then AC -> DC in PC SMPS. Since PC works only with DC (12, 5 and 3 volts) It ...
6
votes
3answers
31k views

Laptop Battery Diagnostics Software? [closed]

My Compaq CQ50-215CA laptop with Windows 7 Ultimate RC 32-bit recently told me to replace my battery for fear of sudden shutdowns. Is there any good diagnostics software that anyone has used to test ...
4
votes
1answer
180 views

Windows application that debug battery consumption

Does someone knows an application for Windows that debugs battery consumption? Im looking for some software that could estimate the remainder batteries energy under some specific conditions. I would ...
4
votes
2answers
3k views

Is a laptop damaged by always keeping it plugged in?

If I keep the power cord plugged in all of the time, will it damage my laptop?
3
votes
4answers
8k views

Removing Battery and running the laptop in pluged in mode?

Is it fine, if I remove the battery from my system and run in by having it pluged-in by the charger? Will it cause any damage to the system? My Laptop is an HP Probook 4320s (which comes under the ...
2
votes
3answers
1k views

Laptop becomes very slow when hot

Everytime I run my laptop for a while, my laptop becomes very hot and it responds very slowly, even with only one program active. Is it a hardward problem? if so, which one should I replace to fix the ...
2
votes
2answers
2k views

Windows battery meter utility suggestions

Can you suggest a good battery meter utility for Windows? Battery status being graphically displayed in the taskbar is the (obvious) minimum requirement. Anything else the utility can inform or do is ...
1
vote
1answer
1k views

How can I always display the remaining battery time on the Windows 7 taskbar?

I want to have the remaining time always visible, and not to have to click/hover to see it. Is it possible only with some gadget? If so, which one would you recommend?
0
votes
2answers
8k views

Battery shows 100% charged but netbook does not work without AC adapter

How can I test if the battery is connected internally to my netbook or if it is working? Is it possible that the battery has been disabled by a software setting? The battery shows 100% charged, but ...
0
votes
2answers
2k views

Laptop battery holds charge, but won't charge any more

Ok, I'm sure I will need to replace either my battery or my AC adapter, but would rather not buy one if the other is the problem. My problem is. I have a Sager laptop that gets quite a bit of use. ...
10
votes
2answers
12k views

Is a CMOS battery rechargeable?

Is a CMOS battery rechargeable? If so, what does its charger look like?
6
votes
3answers
10k views

How does limiting a laptop battery's full charge to less than 100% extend its battery life?

My laptop lets me limit how much of the battery will charge before reaching full charge: At first, I understand what the intent is. I know that overcharging a battery will result in degradation of ...
5
votes
6answers
4k views

Laptop dies when unplugged

I was on the road and had my laptop plugged directly in the wall without a surge protector. A storm hit, the lights flickered and my laptop made a popping sound (scary). Everything works fine when ...
3
votes
2answers
10k views

Can I charge my laptop with a charger that has different specifications?

I'm using a common charger for both of my laptops. The charger is specified at 20 Volts and 3.25 Amperes. My other laptop has a specification of 19 V and 3.42 A. Is it safe to charge my laptop with ...
3
votes
2answers
3k views

Battery plugged in, not charging

This is a new battery and this gives the problem of Plugged In, Not Charging for the past two days. I have no clue as to why this is happening. Sometimes it does, sometimes it does not. Battery Wear ...
3
votes
5answers
2k views

What does it mean if your Windows laptop shows “Consider Changing Your Battery”?

I am currently getting a a message saying "consider changing laptop battery" when my battery gets to 10%. I also have a red X over the battery Icon all the time. I think my battery is ok though. ...
2
votes
1answer
614 views

Windows 7 low and critical battery levels cannot be set lower than 10%

How do I change the low and critical battery levels to below 10%? I understand that this is a reasonable limit for most portable computers, but what about those with large batteries? On my computer ...
1
vote
4answers
2k views

AC/battery laptop issues(not a simple charging fix)

Is it possible to run a laptop off the battery while the AC is plugged in? I can play games no problem while just the battery is plugged in, but obviously that means I have to let it charge after ...
0
votes
2answers
6k views

Windows 8 custom power plan keeps resetting itself

I just got a new Haswell laptop, and was experiencing very short battery life: about 3-4 hrs with minimal use. I knew this had to be wrong, so I checked the power plan, and found that "HP Recommended" ...
0
votes
1answer
198 views

Laptop getting shutdown / run by battery after 10 minutes

Laptop is getting shut down after 10 minutes while it's run without battery - but with battery as well as plugged in it runs first 10 minutes by power then automatically runs by battery until the ...
0
votes
1answer
406 views

Laptop battery indicator saying “plugged in, not charging” [duplicate]

My Toshiba Satellite with Windows Vista is a couple years old. The battery lately is completely shot. Even after charging for a long time, it barely lasts five minutes when you unplug it. I'm ...
0
votes
0answers
27 views

Laptop shuts down when battery meter is relatively full. When I plug in and reboot, battery meter correctly says 1% and charging [duplicate]

Possible Duplicate: Laptop Battery does not show true charging level Subj.: Laptop shuts down when battery meter is relatively full. When I plug in and reboot, battery meter correctly says ...
0
votes
3answers
212 views

Laptop battery replacement possible?

I have the standard Acer Aspire one 532h-2Db, I am looking to upgrade the battery from a standard 6-cell to a 12-cell ( for more longer terms away from the mains ) and I've hit a problem, I cannot ...
0
votes
3answers
315 views

When to use laptop battery? [duplicate]

Possible Duplicate: Is it better to use laptop on battery or on AC power? When laptop battery is fully charged, what is the best for battery life : use the battery or to use AC adapter (in ...
0
votes
1answer
7k views

Is it ok to remove a laptop battery while the laptop is running on AC power? [duplicate]

Possible Duplicate: Are notebook batteries generally hot-swappable? I have a charged laptop battery in a laptop that is running on AC power and charging the battery. Would it damage the ...
10
votes
2answers
541 views

What happens when laptops reach 100% charge?

I have been reading alot of mixed views on how Lithium Ion batteries work when it comes to laptops. I have the new dell xps 15, with an intel i7 cpu, 16gb ram, and a 512gb ssd. Is it bad for the ...
3
votes
3answers
5k views

How can I limit battery charging on a Surface Pro (2) or Windows 8(.1)?

Limiting the maximum amount that a battery can be charged extends its life. Historically, utilities for this have been provided by the manufacturer (i.e. on Sony and Lenovo). Does Windows 8 or 8.1 ...