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).
Log of battery cell performance test results, including densities, charges, and amperes.
| Identifier | ExFiles\Box 49\5\ Scan354 | |
| Date | 10th November 1923 guessed | |
| Contd. -3- Date (12) Cell densities:- (1) 1150 (4) 1150 (2) 1150 (5) 1155 (3) 1155 (6) 1155 (13) Third charge equivalent to average current of 6.0 amperes for 18.0 hours i.e. ampere-hours = 108.0. (14) Dell densities. (1) 1280 (4) 1280 (2) 1280 (5) 1280 (3) 1280 (6) 1280 (15) Initial amperes - 101.5 Temp:- 17°C. Time to 104 amperes - mins. " " 100 " - 3.3 " " " 90 " - 13.5 " " " 80 " - 16.6 " (16) Fourth charge equivalent to average current of 6.0 amperes for 17.5 hours i.e. ampere-hours = 105.0 (17) Ampere-hours realised up to a point where record takes a sudden turn down:- Not taken owing to alteration of circuit. Temperature:- Dates from right column: 2-1-24 2-1-24 3-1-24 28-3-24 28-3-24 30-3-24 | ||