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).
Test report detailing battery cell densities and charge characteristics.
| Identifier | ExFiles\Box 48\3\ Scan323 | |
| Date | 22th November 1923 guessed | |
| -3- Contd. Date:- (12) Cell densities :- (1) - (4) - (2) - (5) - (3) - (6) (13) Third charge equivalent to average current of 4.5 amperes for 21.5 hours i.e. ampere-hours = 96.75 (14) Cell densities. (1) - (4) - (2) - (5) - (3) - (6) (15) Initial amperes - 87.0 Temp:- Time to 104 amperes = mins. " " 100 " = mins. " " 90 " = " " 80 " = 2.5" (16) Fourth charge equivalent to average current of 4 amperes for 18.6 hours i.e. ampere-hours = 74.5 (17) Ampere-hours realised up toa point where record takes a sudden turn down:- 29.5 Temp:- Handwritten dates in right column: Associated with (13): 22-11-23 to 26-11-23 Associated with (15): 27-11-23 Associated with (16): 27-11-23 to 29-11-23 | ||