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).
Battery testing report detailing charge cycles, weight, cell densities, and discharge performance.
| Identifier | ExFiles\Box 35\1\ scan 141 | |
| Date | 4th November 1919 guessed | |
| R.R. 235A (500 T) (S.D. 408. 28-4-17.) Bm. 2/156/13. -2- Contd. (5) Second Charge:- Date. Amperes. From. To. Hours. Ampere-hours. Total ampere hours (6) Emptying and re-filling. (7) Continuation of charge. Tuesday 4.11.19 (8) Weight of battery 79 lbs. 8 ozs. (9) Cell densities :- 4.11.19 (1) 1215 (4) 1200 (2) 1210 (5) 1215 (3) 1210 (6) 1215 (4) (10) Discharge at 6 amperes to 10.5 volts. 5.11.19 Total hours. 11.5 6.11.19 Ampere hours realised. 69.0 | ||