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 an Exide 6RRS.1-3 Battery, detailing its performance and age.
| Identifier | ExFiles\Box 54\2\ Scan204 | |
| Date | 17th November 1929 | |
| E.F.C. X4617E. J.D.40. 17-11-29. X4617E. (174) Re Tests on Exide 6RRS.1-3 Battery This battery has run 9,262 miles & has been on our bench life test 46 months & is now 4 years 3 months old. On low rate discharge 24.8 ampere hours were obtained & all cells shewed positive weakness. On high rate discharge Initial amperes = 100.0 Time to 90 " = 3.5 min " " 80 " = 6.0 " All cells shewed negative weakness. The above results are very poor & shew that the battery is approaching the end of its life. GJ. | ||