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).
Graph chart recording test data for a 'Multiple Storage' unit.
| Identifier | ExFiles\Box 41\2\ Scan157 | |
| Date | 19th December 1924 | |
| 19-12-24 26. Multiple Storage C.A. 6/8. 187 lbs. 180 a.h. Average amperes = 6.42 Hours = 26.0 Ampere hours = 163.0 .872 1.80v REGD TRADE MARK - MEGGER | ||