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).
The performance and testing of a battery after running for over 27,000 miles.
| Identifier | ExFiles\Box 38\5\ Scan258 | |
| Date | 18th October 1922 | |
| RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.C. Order No: P.B. 60 3. Customer's No. x3398 +44lbs. a total of 27,252 miles run. On being received, it was put through a low rate discharge, but only gave 30 amp hours. It was then thoroughly recharged, and discharged, first at the high rate down to 8 volts, then from there, on the low rate, in the usual manner. * The high rate portion of the discharge was bad; the whole of it only lasting 3 minutes, during which one cell became quite discharged, and two partially so. Attached is a curve of the low rate portion of the discharge, showing 7.4 ampere hours. * From initial current 108.6 amps, down to 80 amps. Signed: C.H.P. This Sheet must be filed on completion of the work. | ||