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 a battery, tracking mileage and condition.
| Identifier | ExFiles\Box 168b\3\ img177 | |
| Date | 6th October 1928 | |
| X7835P ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 7835B R & R 2-6 RR 11-2 Battery (189) Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total miles. 10-1-28 | 17EX | 27-6-28 | Received charged | 284 | 1585 | 1301 | 1301 27-6-28 | " | 23-7-28 | Lids removed & cell tops of gelled acid cleaned off | 1585 | 2015 | 436 | 1737 23-7-28 | " | 29-8-28 | | 2015 | 2612 | 597 | 2334 29-8-28 | " | 6-10-28 | | 2612 | 2727 | 115 | 2449 6-10-28 | " | | Battery gone with Car. | 2727 | 4903 | 2203 | 4652 | ||