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).
Instructions on the correct use of the charging switch for the vehicle's battery.
| Identifier | ExFiles\Box 26\2\ Scan157 | |
| Date | 1st August 1919 guessed | |
| -7- USE OF CHARGING SWITCH. If the car is used in circumstances which require frequent use of the starter and lights, it will be found quite necessary to always keep the charging switch on when the engine is running. There is no need to switch this off every time the engine is stopped, as the cut-out takes care of the switching operation, but it is advisable to switch off when leaving the car. If, however, the car is used for long, fast runs in the daytime, it may be better to switch off sometimes, if it be known that the battery is already in a fully charged condition. In these circumstances it is somewhat detrimental to continue charging for any time. It is important that the battery be kept fully charged but not overcharged. Overcharging in this way might cause the temperature limit of 100°F to be exceeded, | ||