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).
Experimental record sheet for a P+R RRN 11-1 battery, tracking its testing and mileage.
| Identifier | ExFiles\Box 58\3\ Scan214 | |
| Date | 20th April 1931 | |
| X6054 P. ELECTRICAL EXPERIMENTAL RECORD SHEETS. F/9369 EX No 7535+6654 P+R RRN 11-1 Battery (213) | Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total miles. | |---|---|---|---|---|---|---|---| | 8-5-29 | Lab. | 13-5-29 | Received dry. | | | | | | 13-5-29 | First Charge | 17-5-29 | weight - 57 lbs with lid.{A. J. Lidsey} | | | | | | 17-5-29 | 23EX | 13-9-29 | Fitted with ebonite collars & lead washers. 1/8" thick | | 44 | | | | 14-11-29 | 18EX | 9-12-29 | | 6362 | 6526 | 164 | 164 | | 9-12-29 | " | 4-6-30 | | 6526 | 18479 | 11,953 | 12,117 | | 4-6-30 | Lab Bench Tests | 12-9-30 | Report - JD{J. Draper - Frames}85 - 21-6-30. | | | | | | 12-9-30 | 22EX | 6-10-30 | | 29725 | 30342 | 617 | 12,734 | | 6-10-30 | " Lab | 29-11-30 | | 00402 | 2700 | 2298 | 15,032 | No further record kept. GJ. 20-4-31. | ||