Ideapad S400 Battery Problem

Hi all ,
4 days back i bought a Lenovo S400 Ideapad with i3 processor(2nd gen), I am really concern about the battery back up its giving , currently its giving 1.5 - 2 hrs . any solution guys .
In Flipkart they have quoted 5 hrs as battery back up , so its a bit of concern that so early it should not give this poor backup .
hoping for a reply .
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hi Ranjan07,
Welcome to Lenovo Community Forums!
On Lenovo sites it also says 5hrs battery life, but this is an idle mode which means no application running and minimal brightness.
Windows is calculating your remaining battery hours of usage by checking your current discharge rate vs. The remaining charge.
You can use Passmark Batterymon to check the discharge rate, high discharge rate is caused applications / Background applications / services and power settings like brightness and wireless/Bluetooth.
On my lab PC here, discharge rate is around 15884mW so If we have the same discharge rate and battery charge of full 32000mW It will only last for about 2hrs.
My system is running on Windows 8 and I tried looking around seemed that there are steps to lower down the discharge rate by adjusting some settings like this on this Post
http://www.friedbeef.com/top-15-ways-to-extend-your-laptop-battery-life/
You can also fully charge your battery and see if the full charge will count as 32000mW, If it is nowhere cose to that then that definitely is a defective battery.
But still if the computer is already on minimal usage lower power settings, still your getting 1.5 to 2 hours,
You can always contact Lenovo Technical support for assistance.
Best Regards
Solid Cruver
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Ideapad S400 Brightness Problem

I'm having a problem with a Lenovo Ideapad S400 Laptop on Linux. The brightness in any linux distribution is very low in comparison with windows 8 brightness.
Some people also had the same problem when downgrading from windows 8 to windows 7. See:
https://forums.lenovo.com/t5/IdeaPad-S-series-Netbooks/s405-s400-screen-brightness-issue-after-downg...
According to lenovo support, the problem is that brightness settings have 101 steps on windows 8 and only 16 steps on windows 7. See this picture to compare:
http://support.lenovo.com/en_MY/research/hints-or-tips/detail.page?DocID=HT076504
Is there a specific solution to this problem on linux? For example, a procedure to force the brightness, a kernel module, a solution to a similar problem in another laptop, etc.
Solved!
Go to Solution.

Hi, this problem was corrected on kernel 3.8.3 by the kernel developers! I'm happy to say that many lenovo laptops now work in linux. Unfortunatly, not in windows 7 yet.
Instructions on ubuntu:
-go to http://kernel.ubuntu.com/~kernel-ppa/mainline/
-folder kernel 3.8.3
-in our case, download linux headers...amd64, linux-headers...all-amd64, linux-img...amd64, linux-image-extra....amd64
-open the terminal
-sudo dpkg -i *.deb
-reboot and enjoy
PS: Intel has release a new driver for INTEL HD Graphics that works smoothly with ubuntu and it is easy to install.
instructions on ubuntu:
-go to https://01.org/linuxgraphics/
-the rest is easy to follow
i hope this will work also on other laptops and linux distributions

Lenovo ideapad s400 startup problem

i have lenovo ideapad s400 with windows7 was working good, but now its hanging Starting Windows please help

hi kuraysi,
Welcome to the Lenovo Forums.
Just to check, if you boot in Safe Mode, are you able to load Windows? If booting to Safe Mode works, perform a clean boot and observe. This will isolate any possible 3rd party software that might be inteferring with the Windows startup.
If that doesn't work and Windows is hanging up on the loading screen then we're probably looking at a corrupted Windows file or a bad hardware. In this case, you may need to:
1. Reload the system via the OneKey Recovery (note that all ways on the OS partition will be wiped)
2. If reloading Windows doesn't work or the machine freezes up then you're prolly looking at a bad hardware (possibly the HDD).
Let me know how it goes.
Regards
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Ideapad S400 Battery backup Problem

Hi,
I'm using S400 notebok,i'm having battery backup problem,I'm getting 2 hrs backup only,Shall i do battery gauge reset to improve backup hrs,If ok,Then how should i do it?
plz g've reply..
Sridhar Gundu

Hi Sridhar,
Welcome to Lenovo Community Forums!
I’m sorry to hear that there is battery backup issue in your S400 Laptop, I suggest you to change the power plan, reduce the brightness and then check if the issue persists also please let me know the OS (Operating System) installed in the computer.
Hope to hear back soon
Best Regards
Shiva Kumar
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S400 Battery Problems

I have recently purchased an S400 and I am experiencing problems with the battery.
I have the battery settings set at Optimised and I have the notification of low battery switched on.
When I turn on my computer it will often say that I have 50-60 percent battery however when I use it without the AC power after a few minutes my computer will shut down due to low battery with no warning.
When I switch the computer back on with AC power it will show the battery as around 5 percent.
Any advice to resolve this problem would be appreciated!

hi Catherine08,
Welcome to the Lenovo Community.
The battery life expectancy of the Lenovo S400 is up to 5hrs according to this pdf data sheet. If you're getting less than advertised especially if you have 50%-60% (2-3 hrs) more but only lasts a few minutes, try to fully drain the battery and charge it up to 100%. (do this on 3 cycles)
If the same problem occurs then this is an indication that the battery is already wearing out (probably has dead cells already) and you need to contact Lenovo to have it replaced. Support phone list here.
Hope this helps.
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Ideapad S500 battery problem

Hi everyone,
3 months ago I bought a Lenovo Ideapad S500 and everything works fine until now. Since a few days every time I start the system I recieve the following message:
"This system doesn't support batteries which aren't made by Lenovo. ...... The system will not charge unauthorised batteries"
It is a weird message since I still use the original Lenovo battery and it sucks because from then on I could only use my laptop when it is pluged in and has current.
Can someone help me?
Kind Regards

eliseriisnes,
No. A new battery should not just last for 3 months under normal usage.
What is your BIOS version of your S500? You can check your version using this knowledge base article.
If it's version before 7ECN23WW (V23) , then you may want to try a BIOS update to see if it solves your problem.
Check this out --> BIOS Update for Windows 7 (64-bit), Windows 8 (64-bit) - IdeaPad S500, S500 Touch
After download the package, I recommend you restart your system before running this BIOS to update your current version.
Note: Make note of any settings you have changed in the BIOS Configuration Utility. These settings may have to be re-entered after updating the BIOS.
Attention: Do not power off or restart your computer during the BIOS flashing process, which will cause serious damage and improper functioning of your computer.
Regards,
Cleo
WW Social Media
T61, T410, x240, Z500, Flex 14
Important Note: If you need help, post your question in the forum, and include your system type, model number and OS. Do not post your serial number.
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Idea pad s400 battery problem

I own a s 400 with 1 month old,i am getting only 1.5 hour battery back up. Is it a common problem. Can i get a free battery replacement?

Good day and welcome to the community.
Your best option would be to call Service and discuss battery replacement options, if any, available to you.
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Regards.
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Ideapad S400 battery charge until 60% and stop charging, on Linux

Got the same issue that windows users had but, I can solve the same way cuz I did Install Linux on my s400, is there anything that can do under linux?

Hi Yasumitsu,
Welcome to Lenovo Community Forums!
I’m sorry to hear that your S400 Laptop is charging only upto 60%, this issue in windows will get resolved by install the LEM (Lenovo Energy Management) and by choosing the (Optimized Battery Health), the Battery charges only to 60% and stops charging the battery and then it take its power from the charger, so if you want to charge the battery to 100%, you need to choose (Maximum Battery Life).
Do post us back if the issue still persists.
Best Regards
Shiva Kumar
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Lenovo ideapad S400, battery not charging when plugged in

Hi, I had the problem where the battery didn't charge at all even if it was connected in the right way and the charger was plugged in. So I started to search internet for possible solutions. Those I found where to 1) disable alt uninstall ac and acpi adapter in Windows Device Manager. Restart computer.. Not charging problem is related to some Windows issue. 2) Choose the alternative "maximum battery life" in Lenovo Energy management.. Neither worked after several and time consuming tries... The problem here is Lenovos "smart" Energy management system that prevents the computer from charging the battery to "save it".. Solution: Uninstall Energy Management (Publisher: Lenovo) under Program and Features in Windows Control Panel and the problem is solved.. And don't reinstall this **bleep**ty program again....

I should note that this unit is pretty new: purchased in august 2012.

IdeaPad s400 battery status question

Hi how do i know when the battery if fully charged when the laptop is turn off, the battery light indicator is always on the only way than i can know is touching the charger and if it is cold means that is fully charged.

Hi Nick,
Welcome to Lenovo Community Forums!
I’m glad to inform you the status of the battery and its notifications have been explained in the image below for your S400 Laptop.
Spoiler (Highlight to read)
Do post us back for further queries.
Best Regards
Shiva Kumar
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Ideapad s400 battery

Is it possible to upgrade to a bigger battery?

Hi whatever125,
Welcome to Lenovo Community Forums!
I think the Battery that were released for this model has minimum and maximum of 32Wh,4Cell.
and no higher battery is available as replacement or upgrade.
What I would Suggest is to use a Passmark Batterymon so you can check the discharge rate of the laptop.
and with that you can disable some Non Microsoft and thridparty services and Startup Programs.
This will minimize the background application running in your system and see the Discharge rate lower together with remaining battery runtime gets higher.
Best Regards
Solid Cruver
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Ideapad s400 touch bios or other hidden power management while on battery? or battery just weak?

Hi,
I have problems with performance when unplugging my ideapad s400 touch, and it does not seem to be related to windows or intel graphics power settings.
Example, while plugged in with full battery (not charging), I can play Skyrim at 600x800 with 28-30 fps (all shadows turned off and with reduced textures, in case you are wondering how that is possible)
But when I unplug, or the computer is charging, the game will be only barely playable at 480x640 with 18-26 fps (besides res. of course same settings).
In both cases, the intel graphics options and in the Lenovo Energy Management is set to the high/max performance settings.
So I am wondering if there are some hidden Bios power management or some other hidden power management going on, when it is unplugged or charging?
Or if simply the battery can not deliver the same juice as when it is plugged in?
Thanks for any help,
L

hi x8lars,
Welcome to Lenovo Community Forums!
Can you try changing the power plan on your system to a High Performance Settings,
Also check the Advanced power settings and make sure that the Maximum Processor start and minimum are set the same with the Plugged in.
Let me know your settings,
Cheers!
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Ideapad S400 Touch - HDMI to VGA problem

Hi,
I need to connect Ideapad S400 Touch to projector which has only VGA input. Therefore, I've bought such converter:
http://www.amazon.com/Black-Input-Adapter-Converter-Laptop/dp/B007KFVQXI/ref=pd_sim_e_4
Unfortunately, whatever I connect through it (projector, tv, PC monitor) I always have no signal...
I tried HDMI direct connection toTV - works
I tried HDMI to DVI converter and connect to PC monitor - works
but when I use HDMI to VGA like one mentioned above - always "no signal"
Please help. I bought this laptop and now find it useless as I present on beamers very often and am completly stacked now...
Any suggestion would be highly appreciated!
Thanks!

hi ro174748,
Welcome to Lenovo Community Forums!
The connection you need is a active coverter.
Passive connection just passes the signal and relay the signal without converting it.
Active connection converts the signal and relay it to the other end.
HDMI send / recieve digital Signal while VGA send / recieve analog
Your corrent covertion will not work if the device cannot recieve digital signals through VGA.
You will need an active converter such as this
http://www.newegg.com/Product/Product.aspx?Item=N82E16812400359
HDMI to DVI operates with Digital signal so no covertion needed, that's why it worked.
Here is a simple discussion about this issue.
Hope this helps
Cheers!
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Ideapad S400 touchpad jumpy when ethernet cable plugged in

I have an Ideapad S400. Lately when i plug in my ethernet cable(router, switch, different cable, tried everything) the touchpad behaves erratic, but only if i run on battery.
Have updated drivers, reinstalled windows even tried ubuntu... same results.
I'm concerned it may be a hardware issue.
Anyone had similar problems?
FIx?
Thank you in advance
Solved!
Go to Solution.

hi piranja21,
Welcome to Lenovo Forums
You might want to try the Troubleshooting steps on this thread, your concern is somehow similar to this one,
Hope this helps,
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Ideapad S400 - what am I losing if I choose Core i3 (Sandy) vs. i5 (Ivy)

Hi everyone,
I'm getting a new Ideapad S400 as a backup PC and my options are restricted to the Core i3 (Sandy Bridge 2375M) and Core i5 (Ivy Bridge 3317U) models. Right now Core i3 is a lot cheaper than i5 in my market (about $150 less).
Question is, am I losing much by going for cheap?
Specifically, would an Ivy Bridge i5 processor bring better battery life or *much* improved performance over the previous-generation i3? I know the S400 is notorious for its low batt life.
As for getting the cheap option and upgrading it, I already have a Samsung 840 SSD and 8GB of RAM waiting for the laptop here, so either model would get the same upgrades.
Thanks in advance for your insights!

hi livino,
Regarding your concerns:
1. With the custom upgrade you have in mind and If you'll be using the Ideapad S400 for basic use (i.e. Stream music/videos, play flash games, etc.), you really won't notice that much difference between the Intel® Core™ i3-2375M Processor (3M Cache, 1.50 GHz) over the Intel® Core™ i5-3317U Processor (3M Cache, up to 2.60 GHz) unless you'll do heavy multi-tasking or a benchmark test (the i5-3317u has Turbo Boost)
CPU Benchmarks:
Intel® Core™ i3-2375M
Intel® Core™ i5-3317U
2. The Intel Core i3-2375m and the Intel Core i5-3317u both have a max TDP of 17W so battery life wouldn't be that noticeable but the I5-3317u have a slight edge on performance when both PC run on battery power as it has a higher clock speed and a bit faster integrated graphics
Integrated Graphics Benchmarks:
Intel HD 3000
Intel HD 4000
If you have a tight budget and will just use the laptop for basic use, the Ideapad S400 with an Intel® Core™ i3-2375M will be sufficient for everyday use.
Regards
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Ideapad S400 Battery Problem

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