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 Exide & Drydex Ltd. asking if the 81 cycle life of their battery is a normal result.
| Identifier | ExFiles\Box 164\4\ img276 | |
| Date | 30th October 1936 | |
| Handwritten: #6122 86021 Rm{William Robotham - Chief Engineer}/Wst.33/JH. 30 th October, 1936. Messrs. Exide & Drydex Ltd., Exide Works, Clifton Junction, Nr. Manchester. For the attention of Mr. E.C.McKinnon. Dear Sirs, We recently concluded a life test of an Exide 6XCMR13 - 1ML battery run strictly to the schedule you sent to us. The life of the battery as determined by the final voltage was 81 cycles. Would you consider this a normal result? Yours faithfully, FOR ROLLS-ROYCE LTD. | ||