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).
Record of battery charging, discharging, weight, and cell density tests.
| Identifier | ExFiles\Box 9\6\ 06-page23 | |
| Date | 1st April 1919 | |
| R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. -2- Contd. (5) Second charge:- Amperes. From. To. Hours. Ampere hours. 28/3/19 8 11.45 5.45 6 48 29/3/19 5 9.30 12.0 2 1/2 12 1/2 31/3/19 2.5 9.30 5.30 8 20.0 1/4/19 3.5 9.0 12.30 3 1/2 11 1/2 2.5 12.30 2.30 2 5 4.0 2.30 7.30 5 20 Total ampere hours 114. (6) Emptying and re-filling. 1/4/19 (7) Continuation of charge. 1/4/19 (8) Weight of battery 72 lbs. 8ozs. (9) Cell densities:- (1) 1150 (4) 1140 (2) 1125 (5) 1150 (3) 1150 (6) 1140 (10) Discharge at 5.75 amperes to 10.5 volts. Total hours. 5.65 Ampere hours realised. 32.5. | ||