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 charging and performance tests, detailing current, ampere-hours, cell densities, and temperature.
| Identifier | ExFiles\Box 54\1\ Scan184 | |
| Date | 8th July 1925 | |
| -3- Date. (13) Third charge equivalent to average current of 6.0 amperes for 17.0 hours. i.e. ampere-hours = 102 30-6-25 to 1-7-25. (14) Cell densities. (1) 1280 (4) 1250 (2) 1250 (5) 1280 (3) 1280 (6) 1250 1-7-25. (15) Initial amperes = 106 Temp :- 18.5 C 65 F Ex - 1.55 voltages of each cell on discharge Time to 104 amperes:- 3.6 mins. per R 1.42 " " " " " 100 " " 8.9 " Ex 1.55 at approx. " " 90 " " 13.9 " per R 1.20 80 amperes. " " 80 " " 16.3 " Ex .85 per R. {Sir Henry Royce} 1.55 2-7-25. (16) Fourth charge equivalent to average current of 6.0 amperes for 17.0 hours. i.e. ampere-hours = 102.0 2-7-25 to 6-7-25 (17) Ampere hours realised up to a point where record takes a sudden turn down :- 58.3 Temperature :- 18 C. 64 F. {Mr Friese} 6-7-25 (18) Fifth charge equivalent to average current of 6.0 amperes for 17.0 hours i.e. ampere-hours :- 102 7-7-25 to 8-7-25. | ||