@Lvdm
Not exactly sure of the tech behind but it may be similar to Wacom tech where the pen does not need to pair to work with the tablet.
These pens need electric power to generate some field so that the tablet can detect the pen. Come to think of it, most pens are battery powered. The one that's not battery powered that I can think of now is Samsung S Pen.
This Lenovo pen should always be on as there's no power-off state. If you've already charged the battery, it may be hardware issue. Contact your seller or Lenovo support to ask.
@Lvdm
Not exactly sure of the tech behind but it may be similar to Wacom tech where the pen does not need to pair to work with the tablet.
These pens need electric power to generate some field so that the tablet can detect the pen. Come to think of it, most pens are battery powered. The one that's not battery powered that I can think of now is Samsung S Pen.
This Lenovo pen should always be on as there's no power-off state. If you've already charged the battery, it may be hardware issue. Contact your seller or Lenovo support to ask.