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).
Bench test results for Ni-Fe (Nickel-Iron) and Alklum alkaline batteries.
| Identifier | ExFiles\Box 182\M20\M20.2\ img040 | |
| Date | 15th May 1924 | |
| To R.{Sir Henry Royce} from EFC. c. E.{Mr Elliott - Chief Engineer} DA.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} c. CJ. & PN.{Mr Northey} c. CY. EP.{G. Eric Platford - Chief Quality Engineer} X.3717. NI-FE NICKEL-IRON ALKALINE BATTERY. X.4615. ALKLUM Since our reports EFC1/T19.3.21 and EFC3/T7.12.22, dealing with the question of nickel-iron alkaline batteries, under cover of the latter of which was sent some notes of Mr. G.R.N.Minchin on the subject generally, and in which reports we had arrived at the conclusion that the position of these batteries is a good way off possible standardisation for chassis service, we have had one or two further batteries for test in which it had been claimed that the internal resistance had been considerably reduced, and the batteries improved in other respects simultaneously. Though no doubt some improvements has been effected, it will be agreed from the results recorded below that the batteries have not even yet reached the stage at which it is considered satisfactory to take them any further than mere bench testing, i.e. we do not consider that much would be gained by running one of these on an experimental chassis. Bench test results on three such batteries are here given for comparison with the representative performances of acid batteries. The three batteries in question are :- (1) NiFe battery, 60 ampere-hour rated capacity, weight 122 lbs. (2) Alklum battery, 60 ampere-hour rated capacity, weight 93½ lbs. (3) " " , 50 ampere-hour rated capacity, weight 80½ lbs. Contd. | ||