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).
Test results for a PoRRII-3 battery, detailing its performance after 43 months of bench life testing.
| Identifier | ExFiles\Box 54\1\ Scan165 | |
| Date | 8th July 1930 | |
| 6.7.6 X4617P. 8-7-30 JD {J. Draper - Frames} 88. X4617P Tests on PoRRII-3 Battery (182) This battery has now run 3977 miles, has been on our Bench Life Test 43 months & is 3 yrs 9 months old. On Low Rate Discharge 88.1 ampere hours were obtained all cells shewing positive weakness. On High Rate Discharge Initial amperes = 108.6 Time to 104 " = 14.0 min. " " 100 " = 20.0 " All cells shewed negative weakness. This battery at present does not shew any signs of deterioration still giving results equivalent to its previous tests. G.J. | ||