It is known to many of us that some people seem to be passing an amount of misjudgment on the actual performance of the IBM/Lenovo Thinkpad 65W ultraportable charger 92P1254 (20V, 3.25A) by remarking that this battery has no memory effect. As a matter of fact, this battery does not have no memory effect, but the real thing is that it has only a little memory effect, which therefore is not so striking as you can observe. And this battery can be divided into lithium battery and Li-ion battery. The former appeared in the market from a very early period of time, and due to its sublime activeness, showed little safety in its actual usage, which, in the course of its charging, was embodied in its combustion and explosion. Later on, the battery was improved on by an addition to it of components which, aimed at an inhibition of lithium from being active, enabled the battery to be imbued with much safety, high effect, and much convenience.
With the improvement of this IBM/Lenovo Thinkpad 65W ultraportable charger 92P1254 (20V, 3.25A), its old version was eliminated from the market a long time ago. How to differentiate the two kinds of batteries from each other depends upon what is labeled on the surface of the battery, the former being Li, the latter Li-ion. One of the advantages of the battery is that its charging times can be four hundred to six hundred times, with the improved product possessing a charging times of eight hundred, and can be used for two years before its being written off, which is why many manufacturers of the battery adopt one year of its maintenance. There are times when the battery can be charged and discharged for twelve thousand times, denoting that the battery has a much longer lifespan than any other battery.