Charge Powerstone (VH)

Regular 
Recharges a Powerstone at a higher rate than the stone recharges itself. Every 3 energy spent by the caster restores 1 point of energy to the stone, but every point restored is counted as an “advance” against future “natural” recharging. Thus, if a 10-point Powerstone is recharged with this spell in a normal-mana area, it will not begin to recharge for 10 days after it is used. If it is used, and then recharged again using this spell, it will be 20 days until the stone begins to recharge normally, and so on. The presence of multiple Powerstones does not inhibit the casting of this spell. 
On any ordinary failure with this spell, the Powerstone gains a new quirk (p. 69). On a critical failure, the Powerstone cracks and is destroyed. 
This spell can safely recharge Powerstones with quirks that limit recharging only if the conditions imposed by the quirk have been met. 
Attempts to ignore those conditions may cause the Powerstone to shatter. 
This spell does not work on Manastone (VH).

Duration: The energy remains in the Powerstone until needed. 
Cost: 3 per point of energy recharged. 
Time to cast: 10 minutes. 
Prerequisites: Magery 3, Powerstone, and Lend Energy.