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 construction and condition of batteries, including a sketch plan of the cell arrangement.
| Identifier | ExFiles\Box 9\6\ 06-page31 | |
| Date | 10th April 1919 | |
| R.R. 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. Contd. -2- EFC4/T10.4.19. batteries each made up of six separate ebonite cells ranged together in varnished teak boxes. The cells of the larger battery are of 60 ampere hour rated capacity and of the smaller 45. We have removed the batteries from the boxes, as we should not use these particular boxes if we adopted these batteries on the car. The various cells are not stuck together in any way, but are merely linked together by the connecting strips from cell to cell, therefore, it is a difficult process lifting these cells in and out of the box, and it would be necessary in this case to have a case for the cells in addition to the battery box fixed to the running board, so that the battery could be easily taken in and out. The sketch plan arrangement of either set is according to the diagram below:- The cells strike one as good by their general appearance. All terminals and connections are lead covered and non-corrosive. The vents are such that the cells are very easily filled and density readings may be easily taken. The vent plugs merely consist of punctured rubber domes which spring into place in the vent holes, and these seem to be very effective in preventing the spraying of acid over the tops of the cells. These however are not the type of vent the Tudor Co. propose to fit as std. The weights and dimensions of the two batteries are as follows:- Contd. | ||