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[SOLVED] [x201] any good set-up for 9-cell battery

X200, X201, X220 (including equivalent tablet models) and X300, X301 series specific matters only.
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whqdz
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Location: Belgium, Brussels

[SOLVED] [x201] any good set-up for 9-cell battery

#1 Post by whqdz » Mon Mar 26, 2018 4:50 am

Hello :)

I've just received a brand new genuine 47++ (9 cell) battery for my fresh x201 (the old one was dead). I took a good look and it's not a fake one, got it for a really good price on ebay.

So, like many people, first thing I did was to install tlp on my linux (kubuntu 17.10). I've also read many topics on the web (this one too viewtopic.php?f=43&t=124945&p=810689&hi ... lp#p810689 ).

After tlp installed and a system reboot, my battery indicator was about 6h39 for 58% battery, I was happy yay :banana: . BUT, after few minutes, I checked the indicator and it was written about 1h30 of life for 56%. (the battery is a sony with 99,1% of life state). I was just on firefox so I think it's really strange.

Is it normal or does it come from a bad set up of tlp? I'm currently doing a full AC charge of the battery while the x201 is off and after uninstalled tlp.

I would like to get around 10-12hours of battery life, my main usage is programming with sublime text, and some firefox. The system has 6gb of RAM and a SSD.

Do you guys have any good advices / set-up to share about improving battery life on a x201? I know tlp can be a good way to improve battery, but also to kill it if we configure it bad.

Thanks! :)
Last edited by whqdz on Fri Mar 30, 2018 4:26 am, edited 1 time in total.

axur-delmeria
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Re: [x201] any good set-up for 9-cell battery

#2 Post by axur-delmeria » Mon Mar 26, 2018 4:58 am

1. Monitor the power consumption using tlp-stat or powertop.

2. Disable Turbo Boost, and reduce the maximum CPU clock speed when on battery power.
Daily driver: X220 4291-C91 i7-2620M

Backup: X220 4291-P79 i5-2520M
Toy: X60F Core Solo U1300
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E; X61 7676-A24; and a BOE-Hydis HV121P01-100 in failed SXGA+ mod
:cry:

whqdz
Posts: 44
Joined: Sat Sep 09, 2017 12:42 pm
Location: Belgium, Brussels

Re: [x201] any good set-up for 9-cell battery

#3 Post by whqdz » Mon Mar 26, 2018 5:46 am

Thank you for your quick reply!

By "monitor the power consumption", what do you mean? configuring something into tlp cfg file after taking a look with tlp-stat?

Is there a good and average maximum CPU clock speed in order to keep battery charge and enough speed for working?

axur-delmeria
Senior ThinkPadder
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Location: Metro Manila, Philippines

Re: [x201] any good set-up for 9-cell battery

#4 Post by axur-delmeria » Mon Mar 26, 2018 6:34 am

Powertop can continuously display battery drain/power consumption in real time, while tlp-stat will display the battery drain at the time the program is run.

Regarding maximum clock speed, that's for you to test yourself. TLP's config file contains instructions on how to set the max CPU clock speed-- there are separate settings when running on battery and AC power, so you can configure it to run slow while on battery and fast while charging.

Perhaps a max clock speed around 1.6GHz can yield enough performance without sacrificing too much battery life-- it can go even lower depending on your computing needs.

Still, I'm not sure if you can reach 10-12 hours even with that. Having wifi and LAN disabled, at low screen brightness, and with an SSD instead of HDD will tip the odds in your favor.
Daily driver: X220 4291-C91 i7-2620M

Backup: X220 4291-P79 i5-2520M
Toy: X60F Core Solo U1300
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E; X61 7676-A24; and a BOE-Hydis HV121P01-100 in failed SXGA+ mod
:cry:

whqdz
Posts: 44
Joined: Sat Sep 09, 2017 12:42 pm
Location: Belgium, Brussels

Re: [x201] any good set-up for 9-cell battery

#5 Post by whqdz » Mon Mar 26, 2018 6:54 am

All right, thanks for the good infos, I really appreciate it. I'm going to test it deeper once I get back home later.

Last question: before uninstall tlp and full charge battery, i've tried libcpufreq0 that I found from this link that is for ubuntu 14.04 ( https://www.dannycroft.co.uk/saving-pow ... ntu-14-04/ )

It looks really useful because it offers the possibility to switch cpu frequency with just a click on the icon.
-> Do you think it's a good way to mix tlp / powertop and libcpufreq at the same time? Or is it better to directly cfg the cpu frequency by the way of tlp cfg file?

I use tlp with no problem on my t430s and my 2 batteries (3 + 6cell), for my x201 it seems a little bit different since acpi is full supported (it's not on the t430s).

axur-delmeria
Senior ThinkPadder
Senior ThinkPadder
Posts: 2001
Joined: Mon May 28, 2012 5:49 am
Location: Metro Manila, Philippines

Re: [x201] any good set-up for 9-cell battery

#6 Post by axur-delmeria » Mon Mar 26, 2018 7:34 am

Personally, I prefer not to mix them, as the two programs might interfere with each other.
Daily driver: X220 4291-C91 i7-2620M

Backup: X220 4291-P79 i5-2520M
Toy: X60F Core Solo U1300
In pieces: two retired but working X61Ts
RIP: 760XD 9546-U9E; X61 7676-A24; and a BOE-Hydis HV121P01-100 in failed SXGA+ mod
:cry:

whqdz
Posts: 44
Joined: Sat Sep 09, 2017 12:42 pm
Location: Belgium, Brussels

Re: [x201] any good set-up for 9-cell battery

#7 Post by whqdz » Thu Mar 29, 2018 6:18 am

I'm back after few tests.

I test many different ways with tlp alone, tlp+powertop, or just powertop. According to what you said to me before, I've set-up tlp by max cpu freq on 1600mhz, and turned off turbo boost when not AC plugged.

The battery was at ~9Wh on Idle, BUT, when I was just browsing on firefox, or launching sublime text, it was at ~18-20Wh consumption.
First question: Is it normal for that use? The total battery time for a 100% charge was around 9h, sometimes 8h, and when I was coding or just browsing, doing some bash, it was written 6hours.

I thought about the cpu architecture that is not really efficient.

Since that, i've just switched on a mint xfce few hours ago, i'm going to test more.

Second question: does it exist a better system in order to maximize the perf and the autonomy? I'm thinking about installing a arch with xfce but I prefer to be sure before because installing this distro needs more time :)

whqdz
Posts: 44
Joined: Sat Sep 09, 2017 12:42 pm
Location: Belgium, Brussels

Re: [x201] any good set-up for 9-cell battery

#8 Post by whqdz » Fri Mar 30, 2018 4:26 am

Finally the problem is done, i've just reached the ~9-10hours of battery with moderate use on my x201 with 9-cell battery (brand new genuine, 4 cycles, 97,1% of design capacity).

After few browsings and many system tests, i've installed mint 18.3 mate that is lighter than kde (xfce was a little bit too light for my use, I like the sticky pad notes and some features of mate, and it uses a looooot of ram). I just use TLP in parallel of the energy software of Mate.

Idle is ~7-8Wh, pick to ~18Wh when launching sublime text or firefox, and average around ~9-12Wh when typing code with 3 or 4 softs openned. It's enough for me and I don't think I could do better with a 1st generation i5.

Next step: switching the RAM for 2x4Go on 1,35volts (actually it's 6go : 1x4Go 1600Mhz @ 1,50volts | 1x2Go 1600Mhz @ 1,50volts).

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