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).
Discharge capacity test chart for a Lucas 60AH lighting and starting battery.
| Identifier | ExFiles\Box 35\1\ scan 118 | |
| Date | 10th October 1928 | |
| DISCHARGE CAPACITY TEST OF 2 LUCAS 1260 TYPE O/2 60AH LIGHTING AND STARTING BATTERY After 3 days rest after full charge Observed ampere-hour capacity to 10.5 VOLTS = 78.3 Night interval 13 3/4 hrs Night interval 15 hrs TERMINAL VOLTS AMPERES DISCHARGE TIME (HOURS) VOLTS AMPERES AMPS ROLLS-ROYCE LIMITED PRINT ROOM -10 OCT. 1928 DERBY X 2676 | ||