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).
Requesting a comparison of Edison cells versus lead accumulators for use in a lighting set.
| Identifier | ExFiles\Box 61\2\ scan0065 | |
| Date | 14th June 1913 | |
| Na.{Mr Nadin} from F.H.R., c. J.{Mr Johnson W.M.} X.3374 R4/B14.6.13. X.664 - RE LIGHTING SET CELLS X.50. X.3374. I have not yet received the comparison of the weight of the Edison cells compared with the usual lead accumulators for use with a lighting set. Neither have I received a definite statement as to whether the voltage on the lamp of an installation on a car would vary more with this type of cell, between charging and discharging, than with a lead accumulator. F.H.R. | ||