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).
Discharge test report for a Lucas battery, detailing its ampere-hour capacity.
| Identifier | ExFiles\Box 35\1\ scan 120 | |
| Date | 1st February 1919 guessed | |
| EFC/T12.2.19. X.2676 - LUCAS BATTERY Fully charged, and discharged at 10 amperes (constant) to 10 volts, this battery delivered 62.5 ampere hours. 2 Lucas 126 o c/r EFC | ||