Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_204_583 ( id number, "capacitor type" text, "capacity" text, "volts" text, "temp." text, "energy-to-weight ratio" text, "power-to-weight ratio" text )

### Question ###
what is the difference in volts between the eestor eesu barium titanate supercapacitor and the act premlis lithium ion capacitor ?

### Accurate SQL ###

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'))