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).
Chart recording of an electrical component test, detailing charge and discharge characteristics.
| Identifier | ExFiles\Box 54\1\ Scan173 | |
| Date | 16th July 1927 | |
| 16-7-27 182 P&R RR11-3 75 a.h. 97 lbs. charged at a constant current of 6 amperes for 16 hours. Average amperes = 6.41 Hours = 13.1 Ampere hours = 84.0 -.866 1.80w | ||