Tp_smapi with slice battery on w510

Hi folks!
I've just finished to install Arch 64 & KDE on my new w510.
Until now I searched a way to manage the discharging of my 9 cell and the slice battery.
Unluckely I can't get my laptop to use the slice akkus at first when attached, and neither I can force manually the discharge of it.
I'm using the tc_smapi and thinkpad_acpi modules, attempts to set the force_discharge in /sys/devices/platform/smapi/BAT1 doesn't take effect.
Dmesg gives me the info "smapi smapi: set_force_discharge: set to 1 for bat=1 " , but reading (using cat) the content of the file returns 0 (should be 1)
Is there a workaroung or exists the chance to invert the mapping of teh batteries (BAT0 => BAT1 and viceversa)?
An other silly problem is that the laptop goes off when the first battery is empty, not changing (in time?) the power source to the slice battery.
Please let me know which further informations are neccessary.
Corpswalker

Thanks toad,
I followed the ArchWiki and the ThinkpadWiki.
Setting the thresholds is running correctly, only problem i have is the behaviour of the battery's discharging.
I can't force the discharging (select power source) of the batteries, google also failed to give me useful informations.
I can't also boot the laptop if the main batery is empty (slice battery is attached correctly). Can it be *also* a HW/Bios problem?

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X220 Will Not Charge When Primary Battery is Dead with Slice Battery Installed

I have got it to do this twice so far, so looks like a problem. My wife always puts her X220 to sleep versus shutdown. Sleep still uses some power apparently which is fine. It looks like it is draining only the primary battery even though the slice battery is connected.
The issue is that with the primary battery drained and the slice battery connected, the TP will not power up. Plug the power adapter into the slice battery and still no power up. The slice battery charged to 100% with it pluged in, but the primary battery would not charge. Plug the power adapter into the X220 directly and let it charge for a moment, then everything works as it should even if you then move the power adapter back to the slice battery.
So if the primary battery is dead, the slice battery and charging the primary battery through it seems to stop working under this scenario.
Obviously not a huge deal since we now know what causes this, but maybe someone wants to fix some day.
I am using BIOS 1.16 and have been for a while.

hey DevItHere,
have you tried updating your bios and at the same time uninstalling the power manager for your X220 and reinstalling it ?
if not, please do so
WW Social Media
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T520: Slice battery charging thresholds stuck

I bought a T520 (4240) a few months ago and, like most people around here had the same issues with pulsing fans and, on applying BIOS 1.28, CPU throttling issues. I'm not sure if the latter one is fixed properly yet, but I also have a problem with the battery charging thresholds that has me stumped.
I have the 55++ and 27++ 9-cell main and "slice" batteries. For a while I let them charge up to 100% whenever connected to AC, but then I read that a 100% charge level is not recommended for day-to-day operation.
I use Fedora 15 Linux 99.9% of the time on my T520. I wanted to set the battery charge thresholds to avoid the 100% charge level, but the "tp_smapi" Linux driver doesn't work for the T520 (yet). I read somewhere that if I were to set the charge thresholds with the Lenovo Power Manager in Windows 7, that they would work in Linux as long as the laptop was not completely powered down when switching from Windows to Linux (i.e., use a warm boot). Well, it worked. In fact it worked really well: I could even power down and remove the batteries and something, somewhere would still remember that I wanted to start charging the slice battery when it dropped below 35% and stop charging it at 80%, even when running Fedora 15.
Having used the machine for a few weeks, I found that I used it on battery power a lot and liked to "top up" the batteries over night. The 35/80 thresholds didn't really suit my working pattern. So, back in the Power Manageer in Windows, I changed the battery thresholds from 35/80 to 50/88 for both batteries (55++ and 27++). On booting back to Linux, I noted that the main battery would respect the new levels, but he slice battery was still stuck on 35/80. Back in Windows, I tried changing the levels in different ways, but the slice battery refused to charge to more than 80%, even under Windows, no matter what I did. It seems that my first change from the default (is it 96/100?) to 35/80 has gotten stuck somewhere and I cannot change it again.
I even notice in the Power Manager that the slice battery constantly toggles between charging and not charging when under AC power if I set the threshold to 85/90. Because the 80% level where the battery is stuck is lower than 85% (my new "start" threshold), charging kicks in, but it immediately stops again, as it won't go over 80%, then, of course, it starts again and stops again, and so on.
How do I fully reset the charge thresholds on the slice battery so I can exceed 80% charge?

I had kind of given up on this, but thank you KooMaster for your confirmation that I am not alone with this issue. I don't think this is a problem with the Lenovo or Windows software, as this happens to me when running Linux without either of those. My guess is that the problem is in the embedded controller (EC) firmware. It is responsible for charging the batteries and enforcing the charging thresholds (that's why they still work even when the machine is turned off).
It probably makes sense to charge each battery to 80% first, as it likely only takes half of the overall charge time to get to that level (the last 20% taking as long again). That way, we get both batteries to a useful charge level as fast as possible. However, based on your observations, it seems that someone in Lenovo forgot to tell the EC to check that the main battery has reached its upper charge threshold, not that it has reached 100%, before topping the slice battery up to its upper charging threshold.
Can someone in Lenovo please comment on this issue, as I raised it over seven months ago now and I haven't heard a single word from any of you about it? "KooMaster" has confirmed the problem on a different model with different batteries, so it seems highly likely that a quick check of the (shared?) EC firmware code and a patch will resolve this quite quickly.
(I updated my BIOS and EC firmware today and it made no difference to my problem.)

Slice battery craziness-What part number IS it???

Last September we purchased 5 slice batteries for our X230 systems. One of them went bad about a month and a half ago, and I opened a warranty replacement ticket with Lenovo but they can't find a replacement battery to ship me (it's been out of stock for about 6 weeks now). They shipped out an incorrect battery at first, and I am getting the run around with various warranty, tech support, shipping, and status departments (I've been transfered to them all, have to explain my situation over and over again, only to get more confusion each time).
The battery I have has TWO part numbers printed on it, but they can't seem to ever cross reference these part numbers with the battery. The place we ordered these batteries from (CDW) have a Manufacturing Part number which is a completely different part number and which is NOT printed on the battery itself anywhere. Then, I just got off the phone with another person at Lenovo who gave me a slightly different part number, and then another part number (5 so far). How can there be so many different part numbers for the same battery and how can Lenovo not be able to cross reference them?
On the battery itself, I have two part numbers (again, why two???)
FRU P/N: 42T4967
ASM P/N: 42T4904
Then, there is a manufacturer part number (not listed on the battery anywhere) 0A36280
Then there is a fourth part number they gave me which is 42T4903
Then they gave me another part number of 45N1035
How can this be so complicated and why so many part numbers?

jbobst,
Given the time elapsed since purchase, this would generally need to be addressed through service. Service will deal exclusively with FRU or field replacement units.
During product life, we may introduce newer versions of a component or we may have an alternate supplier which can have a different FRU number but be functionally interchangable. When newer parts are released, generally the older FRU subs to the newer one so if you order the older number on a product, if we are out of stock on that, the newer one can be sent instead. Forward substitution.
I'll agree that this can be confusing and we try to make this seamless for the customer as much as possible.
Let me look into this overnight and see what we can do to locate stock. I'll work with bgriffin on what we can do to accelerate this for you.
Best regards,
Mark
ThinkPads: S30, T43, X60t, X1, W700ds, IdeaPad Y710, IdeaCentre: A300, IdeaPad K1
Mark Hopkins
Program Manager, Lenovo Social Media (Services)
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Slice battery for thinkpadt430s

Hello,
I have a thinkpad t430s with a 6 cell battery, i need to add batterylife and i find a socket that appears to be a socket for a slice battery in the bottom of my laptop however when i search for the battery on lenovo website or anywhere else i find nothing about a slice battery for the t430s and the 19+ slice battery for the x series doesn't seem it would fit ...
any guide her ??

Hi Ahmadposten,
Thank you for the reply!
Yes, is1981 was right. As told by ‘is1981’ you can use ‘Ultrabay Battery’ but only thing is that you can use either Battery or DVD drive. However you can keep the Ultrabay battery has backup battery.
ThinkPad Battery 43 (3 cell bay)
Hope this helps.
Best regards,
Hemanth Kumar
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Two bugs with 27++ battery behaviour

Bug 1:
55++ and 27++ batteries are both connected. However, the 27++ "lock switch" is not on, and the message "Important information about the slick battery"..."To use the slice battery, the battery must be locked" will appear (this is expected). The system in this case will start discharging the 55++ (this is expected). However, when the 55++ battery drops to 0%, the system then start discharging from the 27++ battery...even when then "lock switch" is off. (This is unexpected)
So, is the popup message incorrect? Or is the behaviour incorrect?
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Power manager's battery icon considers the total amount of charge of both batteries even when the lock switch is off on the 27++. Relating back to bug 1, when the 55++ battery discharges to a warning level (3% is what I've set mine to), the alarm and events will kick in (this is correct, because even though the 27++ is at 100% charge, the switch is off, and the system should only consider the 55++ as functional). However, the battery indicator icon (on the taskbar) of Power Manager and the "Total remaining battery" time & percentage considers BOTH the 55++ and 27++ batteries. So, rather than displaying 3% and around 4 minutes, Power Manager displays 52% and 6 hours (this is unexpected).
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OS: Windows 7 Pro 64bit
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someotherguy wrote:
The switch should be in the locked position whenever the slice battery is attached. If it is not, Power Manager will warn you, but it won't let your system die just because you forgot to flip a switch. That would be a terrible design.
Sorry you are disappointed with the way the slice battery fits.
Yes, that I totally agree with. In which case, it prompts the question of "Is there any electronic reasoning for the existance of the lock switch?". The other two purposes of the lock swich I can see are:
1. It changes the order of dischange between the 27++ and the 55++.
2. It "locks" the battery in.
So, the 27++ battery actually "functions" as a fully functional battery regardless of the lock switch's state. Isn't it? This conficts with the popup message prompt.
Then the next thing is, Windows would report 0% as soon as the 55++ is dischanged...but the system would continue to use the 27++...which, IMO, is a conflict of information presented to the user. While the battery indicator is a Windows feature, I believe Lenovo should remedy this difference in the reported capacity.
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Tp_smapi with slice battery on w510

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