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).
Electrical experimental record sheet for battery S1 (154), page 3.
| Identifier | ExFiles\Box 54\1\ Scan350 | |
| Date | 13th November 1929 | |
| ELECTRICAL EXPERIMENTAL RECORD SHEETS. X No 4617 S S1/Battery (154) Page 3. Date on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles covered. | Total miles. --- | --- | --- | --- | --- | --- | --- | --- 10-1-29 | 9EX | 8-2-29 | Removed batt leaking. Report JC151 20-2-29 | 8120 | 8447 | 327 | 19,167 23-3-29 | " | 11-4-29 | | 8617 | 9315 | 698 | 19,865 22-4-29 | " | 1-6-29 | | 1315 | 369 | 1054 | 20,919 1-6-29 | " | 1-7-29 | | 369 | 1632 | 1263 | 22,182 1-7-29 | " | 11-7-29 | | 1632 | 1980 | 348 | 22,530 11-7-29 | EMS | 13-8-29 | no 6 cell parted box & lids Replaced by cell from S2 P&R.{Sir Henry Royce} Report TD21 13-8-29. 13-8-29 | " | | | 13-11-29 | Used for duty CJ YJ | ||