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 usage dates.
| Identifier | ExFiles\Box 168b\3\ img213 | |
| Date | 17th July 1929 | |
| ELECTRICAL EXPERIMENTAL RECORD SHEETS. X NO 753EP{G. Eric Platford - Chief Quality Engineer} ARBDHII-9 Battery (200) F79640 | Date on. | Location | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles covered. | Total Miles. | |-----------|-------------------|-----------|--------------------------|----------------------|-----------------------|----------------|--------------| | 12-12-28 | Received Charged | 26-12-28 | Guarantee to LY51700D | | | 3 | | | 31-12-28 | 20EX | 8-2-29 | | 0 | 971 | 971 | 971 | | 8-2-29 | " | 25-3-29 | | 971 | 2017 | 46 | 2017 | | 25-3-29 | " | 10-4-29 | | 2017 | 3228 | 1211 | 3228 | | 19-4-29 | " | 1-6-29 | | 3229 | 4236 | 1008 | 4,236 | | 1-6-29 | " | 1-7-29 | | 4236 | 5161 | 925 | 5161 | | 1-7-29 | " | 17-7-29 | | 5161 | 5211 | 50 | 5211 | These Batteries are now obsolete. | ||