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).
Continued page discussing battery cell construction, plate weakness, and voltage readings using a cadmium electrode.
| Identifier | WestWitteringFiles\O\2April1926-June1926\ Scan050 | |
| Date | 26th April 1926 | |
| Contd. -2- EFCl/T26.4.26. their surfaces, the positive or negative plates will show weakness on a quick discharge. From this point of view it is better to have separators ribbed on both sides, though frequently separators are flat on the surface in contact with the positive plate in order better to hold the positive active material in position. All our up-to-date cells have separators ribbed on both sides, as this also assists in keeping down the charging resistance. This can only be done as a result of having better positive pasting. Below are readings taken on various cells, which show the sort of voltage readings that may be expected with a cadmium electrode. In every case the algebraical difference between the positive plate reading and that of the negative must be equal to the terminal P.D. of the cell. It will be seen that the positive plate reading below 2.05 indicates positive plate weakness, and the negative plate reading above .25 indicates negative plate weakness. Contd. | ||