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).
List of different battery models and their corresponding weights.
| Identifier | ExFiles\Box 9\6\ 06-page42 | |
| Date | 3rd December 1919 | |
| To EFC. X.646 3.12.19. X.664 - WEIGHT OF BATTERIES. X.607 X.2676. X.3629 X.646. Lucas 1260 C/3 79½ lbs. Universal A.1 80½ lbs. Fuller Special. 87¼ lbs. Chloride 6 EXE4 69 lbs. (Sgd) L. Furner. | ||