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).
C.A.V. battery failure and a proposal to test threaded rubber separators for comparative purposes.
| Identifier | ExFiles\Box 54\5\ Scan043 | |
| Date | 5th January 1926 | |
| Contd. -2- EFC4/T5.1.26 We have recently opened up a C.A.V. battery fitted with these separators. This battery did not actually a fail in the frequent way of short circuiting due to paste, or separator faolure, but it became reduced in capacity and a cadmium test showed that it was the positive element in every cell that was weak, wherdas it is so often the negative. Failure of the battery capacity is clearly due to loss of active material from the positive plates, the negative plates being found to be in good condition. We are very keen to try threaded rubber separators in our standard batteries where we know that the elements are particularly good, as we think there is a definite possibility in using these separators of a mark still further improvement of standard batteries. We do not know what the commercial position is with regard to use of these separators by other firms than the C.A.V., but we should be pleased if you would write to the Chloride Co. and Messrs. P & R suggesting this possibility, and in particular for the moment asking them if possible to provude us each with a standard battery containing such separators for the purpose of comparative test. The separators removed from the battery referred to had ribs on one side only, i.e. the side against the positive plate, and it was | ||