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).
Ordering specific battery cells to create a composite or 'sandwich' battery for a comparison experiment.
Identifier | ExFiles\Box 54\1\ Scan019 | |
Date | 23th April 1925 | |
X4617P To Wd.{Mr Wood/Mr Whitehead} from EFC. EFC7/T23.4.25. RE BATTERIES. X46178 (crossed out) X4617P Referring to your Wd{Mr Wood/Mr Whitehead}12/NJ21.4.25, would you kindly advise the Chloride Co. that contrary to what we think we previously stated, we should like to receive the 6RRS/1 battery made up with alternate cells, having triangular grid bars with their apices facing inwards and outwards respectively, in a dry condition and not in a charged condition. In addition we would like you to order up for a special experiment two single cells of the P & R standard RR11 battery, these also to be in dry condition. It is our intention to replace two of the cells (one of each kind) of the Exide battery with these two P & R cells, to make up a composite battery having three pairs of cells, each pair being similar, but the three pairs being mutually different. This battery will then give us a comparison between all three types. It is a principle that when a comparison of cell construction is to be made, it is far better, if possible, to make up a sandwich batteries, definitely to ensure that the two batteries get the same treatment, and so much depends on the treatment. It is an advantage, though perhaps a minor one, on our 40/50 arrangement of bolted cell connections, that we can do this sort of thing, and I wish to take this opportunity of making a direct comparison between P & R and Exide cells. EFC. | ||