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).
Battery cell test data log showing density, voltage, and cadmium readings.
| Identifier | ExFiles\Box 168b\3\ img170 | |
| Date | 23th February 1926 | |
| -3- Contd. Date. (12) Cell No. 1 2 3 4 5 6 Density 1160 1160 1160 1160 1165 1165 Voltage 1.75 1.80 1.75 1.75 1.75 1.75 +ve to cadmium 1.95 2.0 1.95 1.95 2.0 1.95 -ve to cadmium .2 .2 .2 .2 .25 .20 (13) Third charge:- Charge given:- 130 ampere hours (14) Cell No. 1 2 3 4 5 6 Density Voltage +ve to cadmium -ve to cadmium (15) Battery temperature:- 18°C Initial amperes :- 108.3 Time to 104 amperes :- 8.1 mins. " " 100 " " :- 13.5 " " " 90 " " :- 18.6 " " " 80 " " :- 26.0 " Cadmium readings:- 1 2 3 4 5 6 Density 1200 1200 1200 1200 1200 1200 Volts 1.78 1.78 1.78 1.78 1.78 1.78 +ve cadmium 1.98 1.98 1.98 1.98 1.98 1.98 -ve cadmium .20 .20 .20 .20 .20 .20 | ||