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 tracking the mileage and testing of an SJ.(172) battery from 1925 to 1927.
| Identifier | ExFiles\Box 54\1\ Scan249 | |
| Date | 15th April 1927 | |
| X4617S ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 4617S SJ.(172) Battery. Date on. | location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles covered. | Total miles 2-12-25 | Lab. | 8-12-25 | L.O.F. O.F.O Fullers from (169) Oldhams" (164) | | | | 8-12-25 | 9EX. | 1-1-26 | | 419 | 1428 | 1,009 | 1,009 1-1-26 | 9EX | 29-1-26 | | 1428 | 2178 | 750 | 1,759 29-1-26 | 9EX | 6-3-26 | | 2178 | 3148 | 970 | 2729 24-5-26 | 9EX. | 3-7-26 | | 4039 | 4319 | 280 | 3009 3-7-26 30-8-26 | 9EX " | 30-8-26 1-10-26 | | 4319 6758 | 6758 7848 | 2339 1090 | 5348 6438 9-11-26 | Bench Tests | 10-11-26 | Low & high rate discharges. Report SC 49 10-11-26 | | | | 12-11-26 | 12EX | 3-12-26 | | 0904 | 1580 | 686 | 7124 3-12-26 | " | 7-1-26 | | 1580 | 2983 | 1403 | 8527 7-1-27 | " | 11-2-27 | | 2983 | 3683 | 700 | 9,227 11-2-27 | " | 11-3-27 | | 3683 | 4266 | 583 | 9,810 11-3-27 | " | 15-4-27 | | 4266 | 5008 | 742 | 10,552 | ||