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 charge and discharge tests, recording current, duration, cell densities, and temperatures.
| Identifier | ExFiles\Box 54\1\ Scan197 | |
| Date | 1st April 1926 | |
| -3- (13) Third charge equivalent to average current of 8.0 amperes for 15.0 hours. i.e. ampere-hours = 120 (14) Cell densities. (1) 1260 (4) 1280 (2) 1280 (5) 1260 (3) 1280 (6) 1280 -P-1.70 volts O-1.40 " E-1.75 " - weakness. O-1.45 " (15) Initial amperes = 94. Temp. = 19°C. Taken at 90 amperes. Time to 104 amperes: ---- mins. " " 100 " 8.0 " " " 90 " 8.0 " " " 80 " 10.4 " P-1.70 O.1.20 (16) Fourth charge equivalent to average current of 8.0 amperes for 13.0 hours, i.e. ampere-hours = 104 P-1.9 O-1.75 E-1.95 end of O-1.80 discharge P-1.95 O-1.75 (17) Ampere-hours realised up to a point where record takes a sudden turn down : - 40.8 discharge Temperature : - 18.5°C. (18) Fifth charge equivalent to average current of 8.0 amperes. for 14.0 hours i.e. ampere-hours :- 112.0 ~~~~~~~~~~~~~ Date. 2340 26-3-26 27-3-26 30-3-26 30-31-3-26 31-3-26 1-4-26 | ||