Identify second-hand notebook batteries old and new

Just sold the laptop with the battery on it, ready to start a new notebook again. In order to learn the last lesson, I'd like to check the battery carefully. Specifically, second-hand laptop batteries should be how to check, I can not go to test standby time, this data has little value.

Small system: Because the battery performance is a relatively subjective indicator, it is difficult to use a fast method for testing. It is recommended that you use battery mark, the industry's recognized authoritative test software.

Test with the conditioning in battery mark and the Life test mode. The conditioning mode test calls the CPU, the hard disk, and the video card to operate over a long period of time, displaying the brightness of the LCD screen to maximum until the battery shuts down.

The Life test model has a certain amount of time to stay, because when using a notebook computer, not always let all parts at the same time running full speed.

Obviously, Battery mark is testing not only battery performance, but also the energy-saving effect of the whole machine.

Therefore, it is recommended that you refer to the life test results, and then according to the factory brand name of the battery use time to compare, the general error should remain within 25%. For some brand-name notebooks, you can even use the relevant software to detect the battery charge times.

Taking IBM as an example, after installing the battery information software, you can estimate the approximate aging of the battery by the results of cycle count in the statistics.