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).
Log detailing cell densities and the fourth charge cycle of a battery, including amperage and duration.
| Identifier | ExFiles\Box 9\6\ 06-page25 | |
| Date | 10th April 1919 | |
| H.R. 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. -4- Contd. (14) Cell densities. (1) (4) (2) (5) (3) (6) (15) Fourth charge. Amperes. From. To. Hours. Ampere hours. 8/4/19 4.5 3.0 8.0 5 22.5 9/4/19 4.5 8.30 5.30 9 40.5 10/4/19 4.5 8.30 2.30 6 24 Total ampere hours 90 Cell densities. (1) 1200 (4) 1220 (2) 1200 (5) 1200 (3) 1200 (6) 1200 | ||