Thinkpad x201i keeps plugging in the battery and using AC power, why does the battery percentage drop?

This is normal. Even if you unplug the battery without using it, there will be a slight loss, but this amount is very low. My R400 is also like this. It will disappear in about half a month. Change from 100% to 95% and then start charging by itself. However, this is not included in the cycle count. Only when it is used below 80% and then recharged is it considered a cycle. Xiaohei's hardware quality is relatively good and can generally reach 1,000. cycle. It has been 3 years since I bought my laptop and it only has 27 cycle counts.

However, there are actually tricks to taking care of the battery. You don’t have to recharge the notebook battery every time. This will do great harm to the battery, just like starving your stomach until you can’t be hungry anymore every day. If I give you something to eat, your stomach will definitely get upset soon. Then there is the regular full discharge and charge, but the time can be longer, such as once every three months, so that the statistics and corrections of Xiaohei's own power management software can be rested.

In fact, there is no need to be so serious when using electronic products. The quality of Xiaohei is definitely the best. If you don’t believe me, go to the second-hand market. IBM laptops are the most popular, and they are basically guaranteed to be used in places you don’t want to use.

I don’t know if the poster knows about SLR cameras. The shutters of SLR cameras have a lifespan. But even if it is a camera used by professional photographers, the shutter is the least likely to have problems. As long as there is no problem with the LCD screen or other parts, the shutter will They can all be used until this camera is obsolete