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 report logging battery cell densities and charge characteristics.
| Identifier | ExFiles\Box 49\5\ Scan278 | |
| Date | 12th March 1921 guessed | |
| -4- Contd. (14) Cell densities. (1) 1100 (4) 1100 (2) 1100 (5) 1100 (3) 1100 (6) 1100 (15) Fourth charge equivalent to average current of 5.0 amperes for 20. hours i.e. 100. ampere-hours. Cell densities :- (1) 1250 (4) 1250 (2) 1250 (5) 1250 (3) 1255 (6) 1260. Date. 5/4/20. 5/4/20. 7/4/21 EFC. {E. Fowler Clarke - Electrical Engineer} R.R. 288A (100) (T.S.G.) 648. 19-2-20 (C. S192) | ||