The battery in your laptop might be an important component that makes your computer tick while it’s not plugged in, but Windows doesn’t exactly give you much information about it. The most you will usually get is an icon in the system tray, a charge percentage and a time remaining before it discharges completely. Other than that, the laptop battery status and detailed information is pretty much non existent.

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If your laptop battery is older or reporting incorrectly, it may be possible to recalibrate the battery. This can correct the reported capacity or battery gauge to extend the life of the battery. IMPORTANT: Recalibration does not save worn out batteries - it ONLY corrects the capacity. The right HP laptop battery for you. When your battery is new, you can rest assured that you have a dependable power source for all your on-the-go computing needs. This is the case whether you buy a replacement laptop battery or simply have one in your new HP laptop. A battery with a capacity of 1 amp-hour should be able to continuously supply current of 1 amp to a load for exactly 1 hour, or 2 amps for 1/2 hour, or 1/3 amp for 3 hours, etc., before becoming completely discharged. In an ideal battery, this relationship between continuous current and discharge time is stable and absolute, but real batteries.

While it’s a good idea to use any included utilities or just follow instructions specific to your laptop, you can also perform battery calibration without any specialized tools. The basic process is simple: Charge your laptop’s battery to full—that’s 100%. Let the battery rest for at least two hours, leaving the computer plugged in. And a laptop may run from 10 watts to over 60 watts (raw power of laptop, running, low power mode, recharging battery pack, etc.). A refrigerator may run around 130 Watts average power, but if frost free may take 600 watts for 10 minutes twice a day, and the compressor may run 15-30 minutes per hour so 'average' over hours/days is less than the.

You might also get the battery model and manufacturer if you’re lucky. That might be enough for most people, but sometimes it’s useful to have a bit more information than that. Windows can’t give you any idea why your battery isn’t holding a charge for very long, or if it’s starting to show signs of wear. A lot of laptop batteries actually have a more information to offer than Windows decides to give you, so it’s there but you can’t get at it.

What you need is a 3rd party utility to get hold of this extra information for you, and like most things, there are a few around to help get hold of it. Here’s a selection 5 of freeware tools to extract much more useful information from your laptop battery:

BatteryInfoView is a handy little tool from Nirsoft to display the status and information values your laptop battery is capable of offering. There are around 20 different values that can be shown, but it depends entirely on what your battery can provide as to how many of these are available. Details such as the manufacturer and model information, power state, charge and wear capacities, charge / discharge rates and times and also temperature can be displayed and these values are updated every 10 seconds.

In addition to the main battery information window, pressing F8 will show the log window which is updated every 30 seconds and gives you an idea as to what the battery has been doing. From here you can see the charge or discharge rates over a period of time, and because the log records standby and resume, you can see how much the battery has discharged while in the low power state.

BatteryInfoView is a tiny portable executable of under 100K and is compatible with Windows 2000 and above.

Download BatteryInfoView

2. BatteryBar

This utility displays less information in terms of numbers than BatteryInfoView, but still a lot more than what Windows provides. BatteryBar goes for a more user friendly approach and displays a very convenient graphical status of your laptop battery in the task bar which is much more readable than the Windows tray icon. This is accompanied by a popup status window that offers valuable information such as charge percent, capacity, charge / discharge rate, charge time left and a wear calculation.

BatteryBar also learns about the the discharge rate of your battery over time, and therefore the more you use the program the more accurate it gets at calculating the minutes left value. The battery graphic will change color depending on its status, blue means it’s on A/C power and charging, green is high charge, yellow is medium and red a critical battery remaining.

The .NET Framework v2 is required to run the program and once installed you don’t run an executable to start the program, but right click on the task bar -> Toolbars -> BatteryBar. This will show the battery status graphic on your task bar. Windows XP and above is supported.

Download BatteryBar

3. BatteryCare

As well as being able to display several bits of information about your laptop battery and it’s status, BatteryCare also tries it’s best to help you extend battery life by giving you quick access to the systems power plans or even switching the plan automatically depending whether you’re on battery power or plugged in. There are also some other power saving optimizations on offer when on battery power including disabling the sidebar, disabling the Aero theme and pausing high consumption services.

The program also has its own tray icon and notifications about low battery status, and interacting with the icon several different ways gives you different displays. For instance, hover over it to get a quick display with charge percentage, rate, HDD/CPU temps and power plan, left click allows quick changing of the power plans and a double left click displays the main information window where you can get basic or detailed battery information (pictured).

There is a portable version available if you look in “more download options” on the website. BatteryCare works on Windows XP, Vista and 7 and the .NET Framework v2 is required.

Download BatteryCare

4. Battery Status Monitor

Battery Status Monitor works by way of a little floating widget that you can drag to anywhere on your desktop that gives a bar and percentage of the charge status of the battery. Right click on the widget and you have access to other options which include changing the power scheme, standby, hibernate and also a useful option of quickly turning the laptop screen off. Very handy to save a bit of battery when you leave the computer for a minute or two, a hotkey for it can also be configured in the settings window.

Clicking on Battery in the menu will pop up a window with more precise status details about it. Clicking the Display menu option opens what doubles up as the settings window and a live graph of 8 functions including battery runtime, current charge percent, current system power consumption and some stats about the CPU. Some interesting settings are to disable Aero at a set battery percentage and also tweaking the AAM and APM functions of your hard drive if supported.

Battery Status Monitor is compatible with Windows 2000 and above.

Download Battery Status Monitor

5. Notebook BatteryInfo laptop battery detail in XP

Notebook BatteryInfo is similar to BatteryBar in that it can display a graphical representation of your laptop battery inside the taskbar. Sadly this program does not officially work on any version of Windows above XP which is a shame. It places a battery graphic on the task bar which shows the current state of charge, hovering over it will pop up a small window with a few more details such as the power scheme, consumption and amount of charge.

There are a number of options on how the task bar meter and pop up will look and also the types of statistic numbers to display such as percent or remaining time or power consumption. There is also a window for battery status values if you right click on the task bar meter and select “Show battery values”. Something annoying the program kept doing though was popping up a nag reminder that Notebook BatteryInfo is for non commercial use only, once would have been enough.

Download Notebook BatteryInfo Photo editing software trial. Resume templates design 2 0 6.

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Thanks so much for article. A question: Are you aware of a simple program that, when called, will state if laptop is on battery or ac power? Best would be one that can write a small diskfile indicating if laptop is on battery or ac power. That way I can write a batch file checking for such a diskfile, giving me an alert when the AC isn’t plugged in. Thanks in advance.

Wonderful page, great options, info etc. After 3yrs of using my laptop(s), buying the same models as extras, so I could interchange batteries, reading up on how best to extend battery life, not keeping them in the pc, but doing a full discharge/recharge each month or so…. AND its only now, that I find this Great site, with all these fantastic options. Perfect for what I want & need.
Thanks so much raymond.cc, and all the developers who create and share this software. Cheers.

wow, amazing tool. Doubletake 2 6 2 release. will install on all of my laptops !

Shellcraft 1 0 8. Thanks for this nice tool mate. It shows Battery Wear 18% and my laptop is hardly one month old.

Works on Win 2000 too!

this software is simpy great. installed both in my laptop running Vista Home Premium SP 1 and my Toshiba laptop running XP Home SP 3.

Thank you Raymond and cangrats to the developer

new info. for me , thanks

Another good battery monitoring utility is Notebook BatteryInfo

Great tool. Since I’m using Google Desktop, I’m using a gadget named “Laptop Check” which gives all the information like processor usage, memory usage, network bandwidth usage and battery time.

It works Properly.
Nice…
Thank You.

thanks a lot man

Great Tool!

I’m the author of BatteryBar. Thanks for your great review.

If you have questions about it, you can contact me. There are links on my website.

BatteryBar fully supports XP, XP x64, Vista, Vista x64, and Windows 7.

Some people with certain netbooks have found that toolbars don’t work on their laptops (including BatteryBar). There appears to be a configuration issue with the pre-installed Windows. It’s also possible that it did not install properly.

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it is quite good…
thanks…

looks like a good tool. let me try it. thanks raymond

nice!!! :)

This will be handy. thanks

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nice tool! thanks Raymond

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Downloaded and installed. Works great.
Thanks Ray

thanks raymond nice tool

Nobody wants to suffer with a low battery situation. We show you how to fine-tune and calibrate your laptop battery so you can squeeze more time out of it.

There are two simple ways to correct electric quantities.

Standard calibration via BIOS

The vast majority of brand name laptops have a Battery Calibration program built straight into their BIOS.

Step 1:

Power on the laptop and hit F2 at the boot screen to enter BIOS. Choose the Power menu using the cursor keys.

Step 2:

Choose Start Battery Calibration and then press 'Enter'.

Step 3:

The screen should turn blue. According to the on-screen tip, you should plug in an AC adapter to charge the laptop to full; afterwards, unplug the AC adapter.

Step 4:

The laptopwill continue discharging until it automatically shuts down. Once it does, plug in a power adapter to charge it again, however do not start the laptop or boot it.

Once the laptop has been fully charged, the battery calibration has completed.

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Manually calibrating the laptop battery

If there is no Battery Calibration option in BIOS, you will need to conduct a manual calibration of the laptop battery.

Step 1:

Boot the laptop, and go into your laptop’s power management settings.

Step 2:

Now click 'Change plan settings'.

Step 3:

Go to 'Change advanced power settings' and select 'Battery'. Click 'Critical Battery Action' and set it to hibernate.

Next, click 'Critical Battery Level' and set it to 5%.

Step 4:

Once all settings have been updated, you should close all applications. Remove the power cord and let your laptop discharge until it automatically shuts off.

Wait for a few hours, please plug the power cord back in and charge up to 100%.

Note: if you want to calibrate your laptop while not in use, you should make sure the following options are all 'Never'.

Let the notebook sit for a few hours until it shuts down automatically. After calibrating, ensure all the power settings are set to their normal values before using the notebook.

Some of these pictures are selected from network, please feel free to contact us if you have any questions about them.