Bar chart comparing the mileage performance of EXIDE and P&R components on a chassis before failure.
| Identifier | WestWitteringFiles\O\2January1926-March1926\ Scan193 | |
| Date | 22th January 1926 guessed | |
| EXIDE P & R 15,544 MILES on CHASSIS 2 cells failed DISMANTLED 28,476 MILES on CHASSIS. 2 cells failed DISMANTLED | ||
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).