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).
Analysis of battery failure modes, including plate buckling, electrolyte levels, and separator experiments.
| Identifier | ExFiles\Box 54\5\ Scan139 | |
| Date | 29th January 1921 guessed | |
| II J.D.112 months service & fractured with the slightest pressure from buckling of plates & swelling of active material. If the electrolyte level is allowed to get low the exposed portion of the separators oxidizes & eventually perishes, of course we consider this to be more serious in view of the plates becoming damaged. The experiment of having the flat side of the separators facing the positive plates was a failure in that it produced high resistance on high rate discharge, through acid not being freely absorbed into the plates. The pressure of the positive plates on the surface of the separators, due to swelling, caused punctures to occur giving partial shorts this in turn leading to further (cont'd) | ||