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).
Test and usage log for an SY Battery (170), tracking its location, remarks, and mileage over several years.
| Identifier | ExFiles\Box 54\1\ Scan265 | |
| Date | 27th June 1928 | |
| X4617S ELECTRICAL DEPARTMENT. TESTED PARTS. X. No:- 4617S SY Battery (170) Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total miles. 23-11-25 | Lab. | 27-11-25 | Ex. PeR.Ex. 7. P&R. {Sir Henry Royce} B. Fuller from(169) Oldham from(164) 27-11-25 | Bench Test | 27-11-25 | Low Rate Discharge 1.80w gave 59.0 ampere hours. 30-11-25 | Bench Test | 30-11-25 | High Rate Discharge .100w See Report JR {Mr James Royce} 135-7-12-25. 8-12-25 | 11EX. | 2-1-26 | | 0 | 998 | 998 | 998 2-1-26 | 11EX. | 7-5-26 | See Report WB {Mr Brazier / Mr Bell} 85 11-5-26 | 0998 | 9012 | 8014 | 9012 1-6-26 | Bench Test | 2-6-26 | Low Rate Discharge 1.80w gave 56 ampere hours. 4-6-26 | Bench Test | 4-6-26 | High Rate Discharge .100w Report JC30 7-6-26 24-6-26 | M.S. | 14-3-27 | Acid changed. 14-3-27 | Bench Tests | 16-3-27 | Low & High rate tests Report JC76. 21-3-27. 27-6-28 | POR cell failed see Report JC109. 27-6-28 other cells used for spares. | ||