This year in February to buy the ThinkPad, a dedicated graphics card because it is designed, equipped with large capacity Toshiba PA3595U-1BRS battery is a 9, to know that ordinary notebook section is only 6,7. Has been concerned about the performance of this battery:

As of last evening, just 5 months, the Apple A1185 battery consumption to reach 18.6%, I was shocked. Especially the last night of discharge, all of a sudden loss of more than 1300 mW when you know that the large capacity battery is good or expensive, the factory design is 77760mwh it.

Search the Internet to a post on the capacity of correction, I do not know is correct, such as discharge next month to try better.

Recovery Method:

1. The battery is fully charged (do not just look at software is displayed as 100%, depending on the remaining charge time is 0 or N / A sort of);

2. The system is set to 3% of entering “sleep” state (in fact, as long as <6% can be, I generally accustomed to 3-4%, this is only a protective measure);

3. Unplug the power, so that whole under the lowest power consumption slowly discharge (reference software can show the discharge power, off-screen, all the power of the programs are closed, to keep CPU is almost idle, the USB- things can be all out, the recent discovery of T40 USB mouse or keyboard if plugged in when the time actually be able to insert more than non-2W power consumption, sweat…); In order to monitor, it can use remote login to another machine on this machine at any time to monitor discharge conditions (reference value: My T40 now to get the lowest discharge power is 6.1 ~ 6.3Wh);

4. And so on to 6% of electricity consumption can look at to see how much time has only 5% from 6% to become, in general, the longer the time, it means power can be corrected out more, but the actual results are generally each time in 1.xxWh ~ 3.xxWh range. (Recently there from the IT return for a battery to 6.XXWh rate discharge, at 6% on actually spent a more than one hour…);

5. Electricity than 5%, the Dell Inspiron XPS M140 battery capacity value should have been “corrected”, and can go to refresh the software inside and see how much recovery to decide not to continue to do the next correction, my habit is that if restoration of electricity> 2Wh, then consider do it again, otherwise do not do the time being. At this point you can plug in the power to call the red (so Step 2 is to protect, has put 0% and then to avoid a direct shutdown);

6. There is also a practice is> 6% of a point of the system into standby, because the standby power consumption is minimal, so the power consumption of over 6% in this time also the longest, best corrected recovery maximum power, but this approach has two drawbacks, one is time-consuming and extremely long (I have 10% of the time in standby, then when work began to discharge, to the surprise the next morning had yet another 6 %) One disadvantage is likely to result in excessive “correction” that is misleading the software, allowed that the battery can work longer hours, so that correction out of power than actual power, usually a kind of performance is used in about 20% will suddenly jump to 10% or less. (However, another explanation for this phenomenon is the battery in a section completely broken…).

Explained:

Software (not the battery information display software, estimated to be software to control the battery may be unique to ThinkPad BIOS or piece of control on a chip) for each discharge based on the circumstances, to 5% at the time of the battery capacity refresh (estimated on the basis of the class before the discharge time information calculated using a prediction algorithm for a capacity of it), so, if we consume a great amount of power (an extreme example of this is to play 3D games with the Sony VGP-BPS5A battery…) the power used 5%, usually found in the value of electricity shows a drop of several Wh, but this fact is not true power, and because some (me) do not know the reason, usually 6% and 0% of the software is not then the same value as the other linearly decreasing, and are usually shown if the actual power consumption and larger the difference of two points can adhere to the longer.

Recommendation:

According to this view, it is recommended to use the Compaq EVO N600C battery normally not used in large power consumption of 6%, this will result in display of the actual power consumption. In addition, the ThinkPad is not recommended as some of the help document said, the battery shine (0%) of the depth of discharge, as long as this power to do more than what can be corrected, especially when the ThinkPad’s software shows battery status When non-green.

This argument is 51nb.com the forum as it appears, successfully tested in the T40 on the other ThinkPad(Lenovo/IBM ThinkPad T43 battery) series should have no problem, As for the other brands do not know, are interested can try their own, estimated that there will be a similar way, only the refresh point (5%) may be different.