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).
Instructions and results for tests conducted on an ST Battery (181) after 20,000 miles.
| Identifier | ExFiles\Box 54\5\ Scan115 | |
| Date | 29th August 1928 | |
| RR 238 (150 BKS.) (DB{Donald Bastow - Suspensions} 431-8 12 24) MP 306975 x.3839 ROLLS-ROYCE LTD. INSTRUCTIONS. To: C.V.B. Order No. I.C. 123. Customer's No. X467S. Re Tests on ST Battery (181) This battery has now completed over 20,000 miles on the road. On Low Rate Discharge through a constant external resistance of 1.80w 56.5 ampere hours were realised. No 1 cell a Std POR + no 4 cell a Std Exide had the poorest capacity + showed positive weakness. After a full charge + high rate discharge was taken through a constant external resistance of 100w Initial amperes = 106 Time to 104 " = 5.0 min " " 100 " = 10.0 " " " 90 " = 15.5 " " " 80 " = 17.0 " The same two cells were discharged first + showed slight positive weakness. The remaining four cells discharged equally on both tests. Signed G.J. This Sheet must be filed on completion of the work. | ||