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).
Extract from a letter from Chloride Elec Storage Co. regarding the weight of battery sets.
| Identifier | ExFiles\Box 49\5\ Scan280 | |
| Date | 1st April 1921 | |
| X. 4288. Extract from letter from Chloride Elec Storage Co. 1.4.21. Mr. Furner raised the question of the weight of the sets we are now supplying, which are slightly less than those of the older pattern. This is due to the negative plates being slightly thinner. | ||