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 from a battery manufacturer regarding starting troubles at low temperatures in experimental cars.
| Identifier | ExFiles\Box 164\3\ img115 | |
| Date | 21th January 1938 | |
| CHILDS - what does this mean - TELEPHONE: RAINHAM 34. TELEGRAMS: (ESSEX) LONDON OFFICE: 50 GROSVENOR GARDENS, S.W.1 Manufacturers of Accumulators for over 50 years. PETO & RADFORD Proprietors - Pritchett & Gold and E.P.S. Company Ltd. WORKS DAGENHAM DOCK. ESSEX. YOUR REF Rm{William Robotham - Chief Engineer}/RC{R. Childs}1/MH{M. Huckerby} OUR REF ESC/MH.{M. Huckerby} 6021 Rolls Royce Limited, D E R B Y. 21st January 1938. Dear Sirs, We are sorry to note from your letter of the 19th instant that you are experiencing starting troubles at extremely low temperatures on your 25/30 experimental cars, when using the 6-LZLD13-S battery. We cannot quite understand why the 6-HZD-9-S battery should give distinctly better results, because as regards the starting effort there is very little difference between this type and the 6-LZLD13-S, and actually the latter type gives a slightly better performance. It is possible that the 6-HZD-9-S battery has had more developing charges and recharges as compared with the 6-LZLD13-S. In addition to this there would be at extremely low temperatures a big difference in the performance of the batteries if they were not in approximately the same state of charge. If, for instance, one battery was very nearly fully charged and the other at say half discharge when the comparative tests were taken. The information you require in connection with the various types of batteries which we supply to you are given on the attached schedule. Yours faithfully, PETO & RADFORD. T.S. Chapman | ||