From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
The bench life tests of an S.T. battery (181).
| Identifier | ExFiles\Box 54\5\ Scan132 | |
| Date | 13th May 1930 | |
| X3839 JD.{J. Draper - Frames}79. 13.5.30. X.4617S. X 3839. TESTS ON S.T. BATTERY (181) This battery has now ran 25,820 miles and has been on our bench life test 17 months. It has given very poor results on bench tests. Four of the original cells are still in this battery and the Std. cells show up better than the cells fitted with threaded rubber separators. On low rate discharge 41.8 ampere hours were obtained, all cells showing positive weakness. On High Rate Discharge Initial amperes = 102.0 Time to 100 " = 1.5 mins. " " 90 " = 4.6 " " " 80 " = 6.8 " All cells showed negative weakness. GJ. | ||