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).
Comparison of test results for NI-FE and ALKLUM alkaline batteries.
| Identifier | WestWitteringFiles\L\2April1924-June1924\ Scan76 | |
| Date | 15th May 1924 | |
| -95- EFC1/T15.5.24. NI-FE. ALKLUM. 60 a.h. 60 a.h. 50 a.h. (122 lbs.) (93½ lbs.) (80½ lbs) Initial amperes on high rate dis- } 1st. 107 92 95 charge through an invariable external } 2nd. 108 95 98 resistance of .100 ohm. Ampere-hours realised on low } 1st. 63.7 48.1 43.7 rate discharge through an invar- } 2nd. O.K. 54.6 48.9 iable external resistance of 1.80 ohm. Finally to confirm the relative cranking ability of these alkaline batteries, and to compare this with that of the various representative standard batteries, the curves of whose high rate discharges are given on the accompanying sheet, a series of tests on a standing chassis was made in which the volts, amperes and rolling speed of the engine were observed for each battery in turn operating the starter motor on the chassis. The results of these tests are set out below. In the case of each battery two independent tests were taken, of which the figures given are averages. Contd. | ||