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).
Comparison of instructions for the first charge of a new battery.
| Identifier | ExFiles\Box 26\2\ Scan104 | |
| Date | 16th January 1920 | |
| R R 238 A (100 T) (R P 846 6.8.19) G 2400 Contd. -3- CKl/T16.1.20. form, as you will see, in view of the above explanation, that they cannot be far wrong. When the whole matter is fixed up between ourselves and the Chloride Company, we will replace pp.22 to 221 of our present instructions by another set of pages embodying instructions to which the Chloride Co., agree. We take it that this course will be satisfactory to you. For your comparison we give a little table below showing some of the differences encountered relating to the first charge of a new battery. Quantity. Instructions on battery. 1918 booklet. E.P.C's instructions. 1919 booklet. Initial acid density. 1320 1250 1250 1350 Height of electro-lyte above plates. ½" ½" ½" ½" Charging current. 3½ 4 3½ 5 Time of charge. 40 hrs 40 40 96 Acid changed or not. No. Yes. Yes. No. Ck.{Mr Clark} | ||