For conjurers it is imperative to have overall knowledge of remaining energy in her conjured items, so that she can recharge those with low energy to prevent their dissipation and unnecessary casting of new items and imbuing them with powers all over again. With see power level spell, conjurer will get fine estimate of how much energy is left in the item. It is not exact, but with some practice it allows quite a good educated guess.

See also: know power level, see item stability, lesser recharging ray