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).
List comparing specifications and dimensions of Nickel Cadmium and Exide batteries.
| Identifier | ExFiles\Box 164\4\ img218 | |
| Date | 29th November 1935 guessed | |
| 6 volt - 64 ampere hours at 10 hr. rate Nickel Cadmium 8.85" x 7.125" x 9.5" = 600 Exide 3-XCM11-1 8.375" x 6.75" x 9.375" = 530 " " 6 volt 74 ampere hour N. C. 10.25" x 7.125" x 9.5 = 693 " " Exide. 3-XC13-1FB 9.188 x 7.125 x 8.781 = 574. " " 76. A.H. 12 volt 42 A.H. N. C. 12.25" x 7.125" x 9.5" = 830 " " Exide 6-XCB7-1 12.375 x 6.563 x 8.875" = 720 " " 44 A.H. 12 volt 53 A.H. N. C. 14.5" x 7.125" x 9.5" = 982 " " Exide 6XC9-1H 12.375 x 6.750 x 9.125" = 762 " " 57 AH 12 volt 64 A.H. N. C. 20 x 7.125 x 9.5 = 1353 " " Exide 6XC11-1H 15" x 6.688 x 9.125" = 915 " " | ||