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).
Graph showing the period of discharge at high rates for three different types of accumulators.
| Identifier | ExFiles\Box 164\3\ img161 | |
| Date | 2nd May 1938 | |
| PERIOD OF DISCHARGE AT HIGH RATES OF 6-HZD.9-S, 6-HZD.11-S&G & 6-GLD.13-SR. ACCUMULATORS. CURVE Nᵒ C20. 2ND MAY 1938. AMPERES DISCHARGE RATE. MINUTES DISCHARGE PERIOD. 6-GLD.13-SR. 6-HZD.11-S&G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 6-HZD.9-S. PETO & RADFORD, 50 GROSVENOR GARDENS, LONDON. S.W.1. | ||