D.O.E./B.R.B. sodium/sulphur battery contract. Third six-monthly report - period ending 30th June 1976 (TR-EC-012)

The current stainless steel central sulphur cells are satisfactory for most laboratory purposes - they have leak tight hot seals, which have an indefinite life when the cell is operated vertically (made possible by the development of a sodium level control device); can retain 80% of theoretical capacity for extended...