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 high-rate discharge curves for a 20/25 HP type battery, comparing a new battery with one after 14 weeks of service.
| Identifier | ExFiles\Box 164\4\ img120 | |
| Date | 5th September 1935 | |
| FULL LINES:- HIGH-RATE DISCHARGE ON NEW BATTERY CURVES OF HIGH- RATE DISCHARGE TESTS ON SLEM. BATTERY TYPE NORME 12-TD. TEMPERATURE 20°C 20/25 H.P. TYPE DOTTED LINES:- HIGH-RATE DISCHARGE AFTER 14 WEEKS SERVICE HAVING RUN 1713 MILES. (5.9.35) I.B. 553 TIME IN MINS. CADMIUM TO POSITIVE CELL VOLTS AMPERES BATTERY VOLTS CADMIUM TO NEGATIVE CADMIUM TO POSITIVE (VOLTS) CADMIUM TO NEGATIVE (VOLTS) BATTERY VOLTS CELL VOLTS AMPERES | ||