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).
Battery issues, specifically poor discharge capacity, and proposed solutions like changing the acid.
| Identifier | ExFiles\Box 38\5\ Scan036 | |
| Date | 10th April 1919 | |
| R.R. 235a (500 T) (S.D. 405. 26-4-17.) Bm. 2/156/13. -5- EFC4/T10.4.19. Contd. cable connections similar to those fitted to the Willard batteries. There will not be the same objection to the possibility of short circuiting because the terminals being at the extreme end of the battery, the cables will be of such a length as just not to reach one another. They will try and produce a more effective type of vent plug for this battery. The P. & R.{Sir Henry Royce} Company are now specialising on batteries alone. We raised the point with Mr. Minchin as to why we had obtained poor discharge capacity results on their first battery. He examined the battery and said it looked a little sickly. We had not taken density readings because this was impossible unless acid was taken out of the cells, but while he was present the we poured some out and took/density and found it to be unexplainably rather higher than we have generally had. We are therefore going to follow his suggestion of discharging the battery and changing the acid for some of lower density, then seeing if we can get better results. It is peculiar that the same thing seems to be happening on the second P. & R.{Sir Henry Royce} battery (which so far has only had one discharge) although in batteries of other makes, we have not had this peculiarity, but have had as good on results by carrying out the first charge ourselves as/those which have come in charged; however, we have asked the P. & R.{Sir Henry Royce} to send the further battery in a fully formed condition, so as to be in perfect working order. EPC. | ||