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).
Recommending the standardisation of the Exide BXR.5 battery following successful testing.
| Identifier | ExFiles\Box 172\3\ img040 | |
| Date | 27th April 1921 | |
| EFC. from Hs.{Lord Ernest Hives - Chair} Hsl/LG27..4.21. X.4288. EXIDE BATTERY BXR.5 We have been running one of these batteries on 1 EX car - it has given no trouble. We consider that the improvements warrant that this battery should be standardised immediately. Hs.{Lord Ernest Hives - Chair} | ||