Endurance tests on Dagenite and Exide batteries for the Wraith model.
| Identifier | ExFiles\Box 168a\4\ img029 | |
| Date | 7th August 1937 guessed | |
| -3- Battery. Dagenite and Exide batteries for the Wraith undergoing endurance tests. | ||
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).