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 voltage drop over time during a 150 Amp discharge at a constant load on an RR11 battery.
| Identifier | ExFiles\Box 54\5\ Scan092 | |
| Date | 27th May 1926 guessed | |
| 150 AMP DISCHARGE AT CONSTANT LOAD ON RRII INITIAL TEMPERATURE OF ELECTROLYTE 68°F VOLTS MINUTES P&R CELL WOOD SEPARATORS RIBBED ONE SIDE AND C. 4 M/M PERFORATED EBONITE SEPARATORS P&R CELL WOOD SEPARATORS RIBBED ONE SIDE AND 0.8 M/M PERFORATED EBONITE SEPARATORS | ||