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 on battery performance, detailing charging cycles, cell densities and ampere-hours.
| Identifier | ExFiles\Box 54\5\ Scan074 | |
| Date | 30th March 1926 | |
| -3- (13) Third charge equivalent to average current of 8.0 amperes for 15.0 hours. i.e. ampere-hours = 120.0 (14) Cell densities. (1) 1260 (4) 1260 (2) 1260 (5) 1260 (3) 1260 (6) 1260 F+ cells + weakness. R+ " " F+ " Highest resistance at end of test (15) Initial amperes = 102 Temp. = 19°C. Time to 104 amperes: -- mins. " " " 100 " : 4.9 " " " " 90 " : 12.6 " " " " 80 " : 15.3 " (16) Fourth charge equivalent to average current of 8.0 amperes for 15.0 hours. i.e. ampere-hours = 120.0 (17) Ampere-hours realised up to a point where record takes a sudden turn down :- 57.1 Temperature :- 19°C. (18) Fifth charge equivalent to average current of 8.0 amperes. for 15.0 hours i.e. ampere-hours :- 120 Date. 16 to 18-3-26 19-3-26 22-3-26 22 to 25-3-26 26-3-26 26-3-26 30-3-26 | ||