Lenovo U400- Battery Life

Hey Guys,
I've bought Lenovo U400 I think a year ago and I've read some reviews about the battery life. They wrote that the battery life is 6 hour and 15 minutes, mine is 2 hourse and few minutes. I would like to know how it is possible.

Hi CalciumKid
Welcome to the Forums!
The following KB article could help with your issue.
http://forums.lenovo.com/t5/IdeaPad-Y-and-U-series-Laptops/Optimizing-battery-run-time-and-battery-l...
One of our gurus, Zehnsteine, also provided this tip, which may help:
http://forums.lenovo.com/t5/IdeaPad-Y-U-V-and-Z-series/Y460p-battery-draining-too-fast-also-charging...
Hope the above helped, and please DO come back to post results so that others can know what worked for you
serene
Community Advocate Program Manager
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Hi celare, welcome to the forum.
     Yes, I've had mine for about a month.
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Hi and welcome,
9 (nine) hours ?
... 5-6 hours you could reach with 6 cell battery ....when upgraded to 2 GB of memory ..when you have set some of these settings Knowledge Base Energymanagement
without upgrade and without these settings 3-4 hours is standard... with 6 cell battery ...
sincerely KalvinKlein
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Hello all,
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Yes I have.
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HOW TO MAXIMIZE YOUR LAPTOP'S BATTERY LIFE

Hi all,
I had this bad experience of this wide problem in laptops, battery failure. It happens almost just after your warranty expires many will agree, funny & true..battery stops charging, shows less than 100% or 0% charge no matter how you try to charge it..etc. Also many complain that the battery shows only remaining charge time, and not the time remaining (read 9th tip below).
Though Mark, Andy, vkyr, nonny, jhem, bill, myles and other admin guys are here to help on this forum, I thought of writing this based on my own experience of these batteries till date..I had compiled a few tips and information for dummies about the use of battery here which might help you to extend battery life:
NOTE to moderatos--please check / modify / add / edit in the following if you find any wrong information.
NOTE to all -- These tips in no way will harm your system, except the 9th tip and also if you remove battery without shutting down laptop
All are welcome to add any new tips or corrections.
1. Never discharge battery to 0%. Always, ALWAYS let battery discharge to a lower limit of up to about 5 to 10%.
2. To run it or not on AC supply without battery If you use laptop most of the time at home or a place where there is a continuous (= uninterrupted) power supply, then simply remove battery from laptop and run laptop on AC power. If you are doubtful about current surge in AC supply, use a surge protector or a UPS (uninterrupted power supply) unit, which doesn't cost much. But be prepared, sometimes you may lose the data which is not saved, due to any accidental interruption. As [Bill] pointed out there might be a performance degradation due to power failure.This is not recommended if you are unsure of power supply.
3. If you use AC power most of the time, then store battery with 30 to 50% (about 40% optimum) charged condition in a dry, away from any magnetism. At least once in a week or two weeks, run the laptop on only battery supply, let discharge it to about 10%, connect to AC supply, charge battery to 100%. Shut down, disconnect supply, remove battery from laptop and then use AC power supply as usual again.
4. If you are running out of remaining battery time, then instead of shutting down PC, hibernate it ( you need to enable hibernation before through power settings in control panel). Shutting down takes more time than hibernation and without saving anything, you can resume your work after hibernation. After hibernating, even if you remove battery, it won't lose any data and will resume once you connect laptop to a power supply.
5. Use power schemes (power management profiles), modify options available in power options under control panel in windows according to your usage & habits. Instead of using a blank screensaver or a screensaver which looks cool, turn OFF monitor, use lenovo power management options or windows power schemes to do this.[Tom&Wjli2]
6. When running on batteries, to save power - reduce brightness of screen (using keys Fn + F10 to reduce, Fn + F11 to increase), mute volume & turn off any unnecessary devices that you are not going to use like (thanks to [Nicolas])bluetooth / modem / plug&play monitor / network adapters(wireless/ethernet/lan/1394) / PCMCIA adapter. Use 'control panel->system->hardware->device manager' to turn these devices on and off.
Changing color schemes to dark or black colors doesn't save power in case of LCDs. (http://savingenergy.wordpress.com/2006/11/21/saving-energy-one-monitor-at-a-time/)
7. Whatever you try, a battery has a specific life time (no. of charging/discharging cycles), and it discharges slightly/continuously over a long period even when not in use. So if your battery is giving problems after about 3 years of service, then it is time for its replacement. Don't assume that if you don't use battery more often, it will last longer, it may usually, but battery failures are unpredictable.
8. If your battery has started to show problems, it will most likely fail sooner or later. Consult experts if battery is under warranty, else buy a new one.
9. Either use lenovo's default program or you might try a program like Notebook Hardware Control (http://www.pbus-167.com/ ) to monitor your power & hardware / temperature. This program shows remaining battery time once you modify advanced options for battery. Also it shows various temperatures for CPU/HDD and warns you if temperature reaches preset limit.
Caution: though this program allows, don't try to modify voltage settings under advanced options, it can harm to your system.
Added:
10. Never run a hot laptop or a hot battery. It damages the battery/laptop, so be sure to keep temperatures within normal range.(below 140 F or 60 deg C).
11. There are few more good/advanced points added by Tom on Page 2.
Message Edited by iamdh on 04-11-2008 09:24 PM
Message Edited by iamdh on 04-11-2008 10:07 PM
Message Edited by iamdh on 04-11-2008 10:08 PM
Message Edited by iamdh on 04-22-2008 05:21 PM
Message Edited by iamdh on 05-31-2008 05:50 PM
Message Edited by iamdh on 05-31-2008 06:06 PM
3000 N100-0768DKU
XP Home 5.01.2600 SP2
Ubuntu 8.04(hardy)
Solved!
Go to Solution.

Dear iamdh,
Thanks for your answer and your update of the main post. I also read the various interesting articles you mentioned.
Now, I would like to submit to you these interesting questions :
Question 1 : Please do the following test : Open Paint, enlarge to full screen, set image size at least the size of your LCD (e.g. 1500 x 1200 dots) and use bucket tool to fill the whole image in pure black. Now, go to control panel, display, screensaver tab, and select Blank screensaver and test it with the View button. DO YOU SEE A DIFFERENCE between the black screen in Paint and the blank screen of screensaver ?
I don't see any difference (I use a vaio A517S laptop with high brightness LCD), so the conclusion might be that the blank screensaver uses up the same energy than a black color screen. A 2nd experiment leads to the same conclusion more conclusively : View again the "blank" screen (in screensaver tab, View button) and play with the Fn Keys to change brighness. You will notice that that it is impacted by brightness level which means the blankscreen is NOT a real "blank". WHY IS IT IMPORTANT ? Because, if choosing the Blank screensaver uses up the same energy as a black screen, AND because the black screen doesn't make any difference with a white screen on a LCD (remember the paper you found), then, why choose the Blank screensaver !!? Or, is it the fact that colors don't make any difference with LCD which is wrong !?? At that stage, I only ask. It is logic, it is one or the other, isn't it ? Any comments welcome.
Question 2 : You remember that energy transforms into various forms : light, temperature, strength, movement, etc... Now, let's come back to LCD monitor : IF a black full screen and a white full screen uses up the same energy (youy remember the paper http://savingenergy.wordpress.com/2006/11/21/saving-energy-one-monitor-at-a-time/), then, there is a interesting point : Because the white screen gives more light than the black (you can check that in the middle of the night using your laptop as a spotlight torche !), it means that the black uses up its energy into an other form. ...What could it be, other than temperature ? LET'S PUT IT AGAIN DIFFERENTLY : The black screen and the white screen use up the same energy, but why it is used for brighter light with the white, it is used for higher temperature with the dark. WHY IS IT IMPORTANT ? Because higher laptop temperatures damage batteries quicker, then it means that we should avoid dark colors and prefer light colors in our windows settings. .. any comment welcome
Really, the central point of discussion is the fact that electricity LCD consumption is not impacted by colors, even white or black. Has it been really double checked by many ? A story to follow..
Message Edited by Nicolas on 04-24-2008 01:34 AM
Message Edited by Nicolas on 04-24-2008 01:35 AM

Power Manager Setting To Preserve Battery Life When Using A Docking Station

I have a Lenovo Thinkpad X220 which is about 19 months old. When at work, the computer is in a Lenovo docking station. At the end of the day, it is removed and any further evening use is typically on the battery.
Yesterday, the battery symbol in the tray at the bottom of the screen displayed a red X on it and indicated that there was an "error". I presume from this that that battery is dead and needs to be replaced. I am surprised by the comparatively short life of this battery.
I was thinking that perhaps the use of the powered docking station played some role in shortening the battery's life. For example, it may have repeatedly overcharged the battery.
Is there a Power Manager setting that will reduce the likelihood that the battery is being overcharged while in the docking station? In the future, is it feasible to simply remove the battery before inserting it into the docking station so that this won't continue to occur?
Thank you.
(I did a search of the community's knowledgebase, but didn't find anything on point.)

Hi,
Welcome to Lenovo Community Forums!
I’m sorry to hear that battery of your Lenovo ThinkPad X220 had undergone wear and tear and has to be replaced.
Capacity of a battery declines as the battery ages, with the number of charge cycles and time at high temperature. Under average usage patterns your battery maintains approximately 70% of its power capacity after the first year of operation.
Most laptops today use lithium Ion (Li-ion) batteries. Overcharging Li-ion batteries is not a problem and does not affect the battery life span. These batteries have an internal circuit to stop the charging process at full charge. This is why the Li-ion batteries are more expensive. The only way for the Li-ion battery to overcharge is if the charging system malfunctions, and then the battery will heat up while in the charger. Older laptops use Nickel-cadmium (Ni-Cd) and Nickel Metal Hydride (Ni-MH) batteries. They require more maintenance than Lithium Ion batteries. They must be fully discharged and then fully recharged so that they don't lose battery life.
Refer this document to see the tips on how to increase the battery life.
Hope this provided enough clarity for your query!
Best regards,
Mithun.
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How long of battery life can you actually get on your U410/U300?

Hi --
I got my U410 Ultrabook today and thus far have been extremely happy. The internet isn't spotty, the touchpad and keyboard work great, and it looks beautiful. The only concern I have is the battery life. Lenovo advertises 8 hours but I expected five or six realistcally.
I started mine up right off the bat and it was at around 80%. I did some hardcore downloading and was using it constantly and it died in maybe 2.5 hours (to be generous). I'm charging it right now and am hoping to get a better result off a full battery.
What's everyone else's actual batery life experience? What are you usually averaging from a full battery? I figure if I turn down the brightness a lot and don't download a lot I can probably max out the performance.
Honestly I'd be happy with five hours on a full charge.

milwaukeephil wrote:
I was the one who reported 5.5 hours of battery.
On the first day, when the battery was dying pretty quickly, I went into Resource Monitor (quickest way to get there is to start Task Manager, go to the Performance tab, and click Resource Monitor at the bottom of that window.)
You can sort that list by the CPU column.
Anyway, I saw Quick Update eating up a large amount of CPU time.... like 25% or more. Quick Update is bloatware, designed to update email and social media in the background. Do people still even use local email clients??? ;-)
After uninstalling Lenovo Quick Update my CPU usage dropped dramatically and battery life went up 2x.
Thanks, battery life has definitely improved after a week now and with brightness settings adjusted and uninstalling Quick Update it's even better.

T500 battery life and extra battery

Hi,
I recently ordered and started using a T500 with P8600 processor and 9-cell battery (the one sticking out in the back). After adding 2GB extra memory and an Intel x25-m g2 SSD, I started using it with Windows 7. I have been using it for a little more than a week now, and I've noticed that battery life seems quite bad. Granted, I've only run it on battery for a longer period once, and then I got about 3h 10 min running time on battery. This was with graphics switched to intel, optical drive turned off, wlan and 3g-card off, screen dimmed to half, power plan set to power source optimized.Usage was fairly light, editing code inside Visual Studio.
Would this be expected running time? It seems quite short to me, considering my old HP nc8430 with T7200 processor (34W TDP) and 7200rpm disk got nearly 5 hours when it was new..
Is there any kind of extended battery available?

Heoo hugohallqvist, welcome to the forums,
You should see this link here http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/T400-amp-T500-Battery-size-what-sticks-out-...
Battery life wise, I can get around 1:30 minutes, pure gaming to about 4 hours. If you have battery issues, get the larger 9 cell and 3 cell one that fits into the Optical Drive Slot so you can get double battery life. It will be a lot heavier but except 6-8 hours.
T500 2081 CTO ~ T9600 2.8GHz ~ WXP Pro 32bit ~ WSXGA+ 15.4 LED ~ATI 3650 ~ 4GB DDR3 RAM ~ 500GB WD 7200rpm
Camera ~ AT&T WWAN ~ CD/DVD Combo Drive ~ Intel WiFi 5300 AGN

T500 battery life

I have a T500 that is now about 17 months old and the battery is on its last legs. I get about <50 minutes in a charge. Is this the experience of other users or is this perhaps an indication that I did not take care of the battery in the best way?
Also, I have a serious gripe about the Lenovo power management (that green battery thing in my taskbar). FOr the longest of time, it would indicate that I have 2hr30 min of batter life, then after about an hour, with about 1:30 battery life showing in the gauge, it would pop up the 4% critical battery warning and within 3-4 minutes enter hibernation mode. I checked the battery maintenance and it never indicated that battery maintenance or recalibration of the gauges was required.
This sucks.

Have you run the battery maintance tool yet? While this may only serve to make the battery meter more accurate it is possible it will show you what is wrong with the battery. I'm going on 17 months with my 9cell in my T500 and still manage just about 6 hours on battery, 3 hours under heavy use and my battery is at a lowly 12 cycles.
Thinkpad T500-2081 CTO | T9400 2.53GHz | 8 GB RAM | ATI HD3650 + Intel GM45 | 15.4" LED WXGA+ | Windows 8 | ATI Catalyst 13.1 (non-switchable)
Thinkpad 390x | PII 333 | 256mb ram | NeoMagic 256AV | SVGA LCD | OS/2 v4.52

Lenovo U400- Battery Life

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