Test report on a P&R RRNII battery, detailing charge and discharge characteristics after road use.
| Identifier | ExFiles\Box 168b\3\ img281 | |
| Date | 21th March 1930 | |
| E.H.C. J.D.G.S. x7535R 21-3-30 x7535R Tests on P&R RRNII Batteries. P&R RRNII - 596 21/7/8 This Battery has now ran 5545 miles on the road. Cadmium readings on charge/cell. positive 2.4. negative -.35 specific gravity 1275 P.D. 2.75 On Low Rate Discharge 66.0 ampere hours were realised at an average current of 6.28 amperes. Cadmium readings on discharge/cell +1.95 negative .15 specific gravity 1140 P.D. 1.80 The battery was given a full charge & then put on High Rate Discharge Initial amperes = 105.0 Time to 100 " = 2.9 min " " 100 " = 9.0 " " " 90 " = 14.6 " " " 80 " = 15.7 " Cadmium readings on discharge positive 1.9 negative .4 specific gravity 1210 (cont'd) | ||
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).