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).
The bench testing and analysis of lighting and starting batteries, with a detailed review of a C.A.V. battery.
| Identifier | ExFiles\Box 35\1\ scan 113 | |
| Date | 5th February 1919 | |
| R.H. 253A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. X.2646 To R.{Sir Henry Royce} from EFC. c. to CJ. c. to EY. c. to EH. EFC1/TS.2.19. 5th February 1919 X.664 - BATTERIES. X.560. X.2676. We have recently received two lighting and starting batteries, one from Messrs. Lucas and one from Messrs. C. A.{Mr Adams} Vandervell. We have made discharge capacity tests of these, results of which are given by the accompanying curves which carry their own explanation. This comprises all the bench testing work so far done on batteries. We would like here to set down what we consider the good and bad points of these batteries:- C.A.V. BATTERY. This battery is a mono-block celluloid battery partitioned into six cells, the arrangement of the cells being according to sketch herewith:- [DIAGRAM OF A 6-CELL BATTERY] Weight 105 lbs Overall Length 14.25 ins Breadth 9 " Height 11 " It will be noticed that the terminals are very close together, and we do not like the arrangement for this reason. There are brass taper cones which fit into the leaden lugs and are secured by nuts, the cables having previously been sweated in the hollows in the cones. We think brass on the terminals should be avoided. The filling holes of the cells are too small to Contd | ||