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).
Letter to Peto & Radford Ltd. regarding the results of a P. & R. battery life test.
| Identifier | ExFiles\Box 164\4\ img277 | |
| Date | 30th October 1936 | |
| 86021, Rm{William Robotham - Chief Engineer}/Wst.34/JH. 30th October, 1936. Messrs. Peto & Radford Ltd., 50 Grosvenor Gardens, LONDON.S.W.1. For the attention of Mr. G.W.Pritchett. Dear Sirs, We recently concluded a life test of a P. & R.{Sir Henry Royce} battery type 6HZD.13/S run strictly to the schedule supplied to us by Mr. Chapman. The life of the battery as determined by the final voltage was 71 cycles. This life is less than the Exide battery type 6XCMR which gave us 81 cycles. Do you consider the life of 71 cycles, normal? Yours faithfully, FOR ROLLS-ROYCE LTD. | ||