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 results for a R2-6RR11-1 battery, detailing mileage, bench life, and discharge performance.
| Identifier | ExFiles\Box 168b\3\ img283 | |
| Date | 16th May 1930 | |
| X.7535 P. E.T.L. 16-5-30 J.D.31. X 7535 P Test on R2-6RR11-1 Battery (187) This battery has now run 13,876 miles & has been on our bench life test 26 months. On Low Rate discharge 69.5 ampere hours were obtained All cells showed positive weakness. On High Rate Discharge Initial amperes = 107.2 Time to 104 " = 6.7 min " " 100 " = 12.4 " " " 90 " = 19.2 " " " 87 " = 20.0 " All cells showed negative weakness. The above results are not quite so good as those previously taken. GJ. | ||