Recharge can be find at line 0026A80C and at 13BA142C in CD1 (format 2352)
0026A80C - 0026A837 = []Recharge value in Menu
13BA142C - 13BA1457 = []Recharge value in Battle
These are the values of Recharge
14 00 00 00 40 20 06 0C 00 00 00 00 00 00 00 00
80 00 00 00 FF FF FF FF 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00
14 means its consumable (change that to 04 it will make it like an healing element "infinite use")
40 means it can only target 1 ally
20 is its color (red)
06 is the grid allocation
and if you want to make it +/- its the 19 byte (2 byte before the FF FF FF FF)
***edit***
if you wanna make it flawless, the Recharge name text string is at
00070C95 - 00070C9D = []Recharge
you'll have to find the menu and battle description also! Not sure where it is but it should be quite easy to find