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).
Cell densities and charge equivalents from battery tests.
| Identifier | ExFiles\Box 41\2\ Scan112 | |
| Date | 18th May 1920 guessed | |
| R.R. 199 (250T) (SD676 19-7-17) M/P 180865 -4- Date:- (14) Cell densities. (1) 1140 (4) 1120 (2) 1130 (5) 1120 (3) 1120 (6) 1120 15.6.20 (15) Fourth charge equivalent to average current of 10 amperes for 20 hours i.e. 200 ampere-hours. 15.6.20 to 21.6.20 Cell densities :- (1) 1300 (4) 1270 (2) 1260 (5) 1300 (3) 1260 (6) 1280 21.6.20 EFC. LF. | ||