i got my 510 today ( pcc charging case ) , i can charge the battery directly by the charging case . it has 5 cartomizers , 1 battery .but the battery limited, so i have no way but to rest when it is charging . i want a pcc case which can carry 2 batteries , one charging , another smoke . when it is out of battery , i can change another one . it will be better . who can help me . thx !