CREATE TABLE table_204_583 (id NUMBER, "capacitor type" CLOB, "capacity" CLOB, "volts" CLOB, "temp." CLOB, "energy-to-weight ratio" CLOB, "power-to-weight ratio" CLOB)

what is the difference in volts between the eestor eesu barium titanate supercapacitor and the act premlis lithium ion capacitor ?
SELECT ABS((SELECT "volts" FROM table_204_583 WHERE "capacitor type" = 'eestor eesu barium titanate supercapacitor') - (SELECT "volts" FROM table_204_583 WHERE "capacitor type" = 'act premlis lithium ion capacitor'))
SELECT ABS((SELECT "volts" FROM "table_204_583" WHERE "capacitor type" = 'eestor eesu barium titanate supercapacitor') - (SELECT "volts" FROM "table_204_583" WHERE "capacitor type" = 'act premlis lithium ion capacitor'))