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).
New 'S' Type terminal and domed cell lid for the 20/25HP chassis battery.
| Identifier | ExFiles\Box 58\3\ Scan184 | |
| Date | 14th February 1931 | |
| X4642P To EFC. {E. Fowler Clarke - Electrical Engineer} BY {R.W. Bailey - Chief Engineer} /RD2/IG.14.2.31. [STAMPED: RECEIVED 9 FEB 1931] X.4642E. 20/25HP CHASSIS BATTERY. X.4642 P. On "T" Series we are introducing the "S" Type terminal on the battery, its official number will be:- P. & R. {Sir Henry Royce} T B S 7-E. {Mr Elliott - Chief Engineer} Exide 6XS3-4. P. & R. {Sir Henry Royce} also propose to use a domed cell lid {A. J. Lidsey} with rubber gasket joint similar to the 40/50HP battery and this confirms your verbal agreement of same. The height is increased .250". BY {R.W. Bailey - Chief Engineer} /RD. | ||