Instruction sheet detailing low and high rate discharge tests on an SX battery that has run 13,787 miles.
| Identifier | ExFiles\Box 54\1\ Scan298 | |
| Date | 20th August 1928 | |
| R.R. 236 (150 BKS.) (DB {Donald Bastow - Suspensions} 431-8 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.W.G. Order No. I.C.121. Customer's No. x4617S. Re Tests on SX Battery (159) This battery has now run 13,787 miles on the road. On Low Rate Discharge through a constant external resistance of 1.80w 49 ampere hours were realised. All cells shewed positive weakness. High Rate Discharge through constant external resistance of .100w Initial amperes = 101 Time to 100 " = 2.5 min " " 90 " = 8.6 " " " 80 " = 11.5 " All cells shewed negative weakness on this test but the P&R shewed more signs of deterioration than the Exide. Signed: g.g. This Sheet must be filed on completion of the work. | ||
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).