Issues with vive wands

So basically i just bought an htc vive pro 2 kit for 300euros and the guy told me he used it just for simracing so he didnt even unboxed the wands (and in fact all the cables such as chargers were completely sealed). The problem is that whenever i try to turn on 1 of the 2 wands it wont unless i connect it to the charge, turn it on, and then i can unplug it. This happens even if the battery is fully charged. Anyone got any ideas on how to fix it?