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).
Leakage test results for an SU Battery.
| Identifier | ExFiles\Box 54\1\ Scan205 | |
| Date | 14th April 1926 | |
| RR 238 (150 BKS.) (DB {Donald Bastow - Suspensions} 461-B-12-24) MP 306975 X. 4617 S. ROLLS-ROYCE, LTD. INSTRUCTIONS. To C.F.C. Order No. JB19 Customer's No. X.4617S. Leakage Test on SU Battery This battery was fully charged & allowed to stand for a period of 14 days, when a Low Rate Discharge through an invariable external resistance of 1.30 w was taken & 32.6 ampere hours were realised. The battery was again fully charged & then Low Rate discharged again, but this time immediately after charge & gave 40 ampere hours. This means that the battery had lost approx 7 ampere hours whilst standing the 14 days. In each case the Oldham cells were discharged first & cells showed positive weakness on the Cadmium. Signed G.J. This Sheet must be filed on completion of the work. | ||