This is straight off B.net. The best d2 resource there is. www.battle.net/diablo2exp
Simply put.. At base values each point of damage is absorbed with two points of mana. at telekensis lvl 16, each point of damage is absorbed with one point of mana.
Quote:
Each point in Telekinesis makes Energy Shield's damage absorption more effective. By default, for each point of damage absorbed by Energy Shield, 2 mana points are deducted - a 200% ratio. Each hard skill point in Telekinesis makes Energy Shield 6.25% more effective. For example, with 8 points in Telekinesis, 1.5 mana points are deducted for each point of damage absorbed - a 150% ratio. With 16 points in Telekinesis, one point of damage absorbed equals one point of mana loss - a 100% ratio.
Simply put.. At base values each point of damage is absorbed with two points of mana. at telekensis lvl 16, each point of damage is absorbed with one point of mana.