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).
Instructions for packing batteries for shipment and charging new, unfilled batteries with wood separators.
| Identifier | ExFiles\Box 180\M2\M2.3\ img016 | |
| Date | 10th March 1920 | |
| Contd. -5- The same remarks apply in the main for batteries for shipment and they have given us particulars of how a battery should be packed for shipment. They do not think the battery should be put out of working order for this purpose, but that it should be despatched at owner's risk carefully packed and labelled. (7) NEW BATTERIES IN STOCK UNFILLED. They do not like us to call batteries "dry" when they are delivered to us, as the wood separators are wet unless the battery has stood for a long time. Owing to the wet condition of the separators it is necessary on the first charge to put in acid initially of a higher density than the density at which it finishes at the end of the charge. This acid density immediately goes down, partly owing to the separators and prtly owing to the absorption of acid by the negative plates. In order, in all cases, to finish up the charge with acid of 1280 density, it would be necessary to start with acid of varying density according to the time the batteries have been stored and the corresponding amount of water that has dried out of the separators. If the separators were perfectly dry it could be taken that acid of 1280 could be put in the first instance and that this density would be exactly restored at the end of the first charge. On account of the separators being wet, acid of higher density has to be used, and any required weakening effected after the charge. Contd. | ||