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 memo detailing the progress of various batteries intended for use in experimental cars.
| Identifier | ExFiles\Box 38\5\ Scan100 | |
| Date | 13th October 1920 | |
| To Hs.{Lord Ernest Hives - Chair} from EFC. X 3398 Extract from EFC2/T13.10.20. X.664. BATTERIES FOR EXPERIMENTAL CARS. X.1198. A box has been made by the Pattern Makers for the Willard Thread Rubber Battery which is now quite ready to go on an Experimental car. X.3398. A box is being made for the P & R HDE13 battery, so that this battery can also be put on an experimental car. X.3717. Alkaline Ni-Fe Battery is ready for being placed on an experimental car for test as soon as you can conveniently arrange this. X.607. We have abandoned the idea of putting Chloride PHR 7 on the experimental car as other Chloride batteries will be coming along. | ||