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 failure of a P & R cell in an SS battery.
| Identifier | ExFiles\Box 54\1\ Scan288 | |
| Date | 17th August 1928 | |
| X46175. EFC. {E. Fowler Clarke - Electrical Engineer} JC. 147. 17.8.28. RE FAILURE OF P & R CELLS IN SSx BATTERY (15g%) No.4. cell has failed in the above battery after only running 13,787 miles in 2 years 7 months, and 6 months on our bench life test. The cause of failure was due to the positive plates stretching which allowed sediment to collect on top of the separators and causing a short. The negative plates and all separators were good. The positive plates had lost practically no paste, but the plate grids were very weak and frail. The sediment had only reached a depth of 1/8". EFC {E. Fowler Clarke - Electrical Engineer} / G.Johnson. | ||