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).
Low rate discharge test graph for a multiple storage battery.
| Identifier | ExFiles\Box 41\2\ Scan155 | |
| Date | 29th December 1921 | |
| HTE X X 37/11 Low rate discharge test of Multiple Storage battery 29.12.21 Amps per div = .285 Average Amperes = 9.55 Amperes Hours = 129.0 2/6 REGD TRADE MARK MEGGER | ||