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 condition and performance testing of Exide and Accu-Slem battery cells.
| Identifier | WestWitteringFiles\M\2October1924-December1924\ Scan51 | |
| Date | 11th October 1924 | |
| Contd. -4- EFCL/T11.10.24. Low rate and high rate discharge results again taken showed the battery still to be in excellent condition, though on the School car the battery would have been subjected mostly to charging and would not have had a great deal of lighting work to do. Upon one of the cells being opened up it was found that there was only about 3/16" of sediment at the bottom, and the state of the plates and separators was in every way excellent. Then three new standard (improved) Exide cells were obtained and sandwiched with three of these Accu-Slem cells, to make up a battery, and the battery was placed on experimental chassis 49-GB. This battery with the three new Exide and three old Accu-Slem cells is still on 49-GB and is behaving satisfactorily, though it has done, in addition to the original 23,000 miles on 29-CB, 8000 miles on this chassis. The only trouble that has been experienced has been corrosion of the terminal nuts apparently partly due to the acid creeping up to the Accu-Slem cells in some way which it does not do in the case of the standard Exide, and also partly due to the fact that the nuts on the Accu-Slem cells are not so well lead-covered. This no doubt would be an easily remediable fault. Of the three cells which we replaced by Exide cells, one of these was, as above stated, opened up by ourselves and one each of the other two were sent to the Exide Co. and Contd. | ||