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).
Standard volt-ampere characteristic chart for battery and leads during dynamo tests.
| Identifier | ExFiles\Box 31\1\ Scan068 | |
| Date | 17th June 1920 | |
| X.294. STANDARD VOLT-AMPERE CHARACTERISTIC OF BATTERY AND LEADS FOR DYNAMO TESTS. X.664. Amperes. (a) Cold Volts (b) Hot volts. 0 12.4 balancing volts. 13.6 1 12.6 13.7 2 12.8 13.8 3 13.0 13.9 4 13.2 14.0 5 13.4 14.1 6 13.6 14.2 7 13.8 14.3 8 14.0 14.4 9 14.2 14.5 10 14.4 14.6 11 14.6 14.7 12 14.8 14.8 Limits .1 Note:- The (a) characteristic assumes an external circuit resistance of .1 ohm together with an E.M.F. rise of .1 volt per ampere. The (b) characteristic assumes an external circuit resistance of .1 ohm together with no rise of E.M.F. FFC. | ||