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 technical assessment of a battery's construction, components, and suitability.
| Identifier | WestWitteringFiles\M\2October1924-December1924\ Scan65 | |
| Date | 7th April 1924 guessed | |
| Contd. -2- It will be seen that it is much too wide to go in the standard battery box. (9) Each cell is a unit in itself. (10) Disposition of cells in the battery. Complies with this item O.K. (11) Terminals & Connections. The cell to cell connections are of the burnt up type and our specn. asks for kinked links fixed with lead covered brass nuts. The terminals are of heavily lead covered brass nuts, but no lock nuts are provided which are asked for. (12) Sealing Compound. Complies with this item O.K. (13) Plate Grids. The outer periphery of the positive grid is very strong and robust also the paste appears to be keyed in effectively. The negative grid is much thinner and weaker on the outer periphery. The plates have only a small radius at the corners and no feet are provided, but the plates rest on 4 supporting ribs. (14) Separators. Ribbed ebonite separators are used being pierced with circular holes. (15) Space at bottom and above plates. The space provided beneath the plates is rather on the small side which requires to be about 1/4". Ample space is provided above the plates allowing the electrolyte to be fully 1/2" above the plates, which also allows density readings to be taken, and requires less frequent topping up. (16) Overflow of electrolyte. The vents are of a poor design because when the battery is on charge they allow the acid to spray out over the top of the battery and they also get full of acid which is not allowed to run back into the cells again, and consequently requires cleaning after every charge. Other items O.K. There is no possibility of this battery going on one of our Expl. cars as it is much too wide to go in the standard battery box. EPC/GJ. | ||