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).
Performance table of experimental chassis lighting and starting batteries.
| Identifier | WestWitteringFiles\D\May1920\ Scan58 | |
| Date | 1st August 1920 guessed | |
| -3- TABLE OF PERFORMANCES of EXPERIMENTAL CHASSIS LIGHTING AND STARTING BATTERIES. COLUMN HEADERS: Ref. No. Maker and X. No. Description - Type Description - Cell or Ebon. Description - Weight complete with acid (lbs). Rated a.h. capacity (10 hr rate) Ia - Actual capacity at constant current of 1/10 rated capacity. (a.h.) Ib - Actual capacity to 10.5 volts (a.h.) Ampere hours per pound - Ia. Ampere hours per pound - Ib. II - Initial current through .0763 ohm and time to fall to 100 amperes. (a) Amps. Mins. III - Initial current through .0763 ohm and time to fall to 100 amperes. (b) Amps. Mins. IV - Time of discharge (hrs) DATA: Row 21: Maker and X. No.: Universal. 3629, Type: A, Cell or Ebon.: E, Weight: 80 1/4, Rated capacity: 60, Ia: Cancelled, Ib: No good. Row 22: Maker and X. No.: Fuller. 646, Type: Special, Cell or Ebon.: E, Weight: 87 3/4, Rated capacity: 60, Ia: 51.0, Ib: 42.5, Ampere hours Ia: .581, Ampere hours Ib: .484, II: 131.6 9.65, III: 127 7.27, IV: 128 5.35 4.45. Row 23: Maker and X. No.: Chloride 6BXE 607 4/1, Cell or Ebon.: E, Weight: 69, Rated capacity: 44, Ia: 54.0, Ib: 47.8, Ampere hours Ia: .783, Ampere hours Ib: .693, II: 132 8.25, III: 129.5 12.12, IV: 133 12.30 4.62. Row 26: Maker and X. No.: Multiple Storage. 3711, Type: CA18, Cell or Ebon.: E, Ia: Not yet tested. Row 27: Maker and X. No.: Chloride 6PHR7 607, Cell or Ebon.: E, Weight: 90, Rated capacity: 60, Ia: 54.0, Ib: 52.5, Ampere hours Ia: .600, Ampere hours Ib: .583, II: 131 10.15, III: 131 13.72, IV: 136 16.17 5.40. Row 30: Maker and X. No.: Willard 1198, Type: S.J.R. 27, Cell or Ebon.: E, Weight: 82 1/2, Rated capacity: 73, Ia: 50.7, Ib: 48.9, Ampere hours Ia: .614, Ampere hours Ib: .592, II: 139 10.45, III: 137 13.5, IV: 138.5 15.84 5.25. Row 33: Maker and X. No.: Tudor 979, Type: R.F.1, Cell or Ebon.: E, Weight: 77, Rated capacity: 50, Ia: 41.5, Ib: 46.0, Ampere hours Ia: .539, Ampere hours Ib: .597, II: 130 7.90, III: 130.5 10.33, IV: 132 12.50 4.37. | ||