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).
Technical note on battery E.M.F. and charging characteristics.
| Identifier | ExFiles\Box 71\2\ scan0016 | |
| Date | 31th December 1925 | |
| EFC4/T31.12.25. -3- Contd. The battery E.M.F. of 16.8 volts is only quite a temporary E.M.F. due to gases on the plates, and very quickly falls to only 13 volts or so when the charging current goes off, or to some intermediate value when the current is reduced. Nevertheless, it is necessary to reach this E.M.F. occasionally in order that the battery may now and again have a complete charge. EFC. | ||