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).
Graph showing intermittent high rate discharge tests of various batteries.
| Identifier | WestWitteringFiles\G\June1921\ Scan93 | |
| Date | 6th May 1921 | |
| AMPERES DISCHARGE MINUTES OF CONTACT INTERMITTENT HIGH RATE DISCHARGE TESTS OF BATTERIES All batteries were discharged through the same circuit at constant resistance .0763 ohm. All curves correspond to 15 seconds on contact, 45 seconds off. BATTERIES: 57, 59, 60, 61, 63, 65. X 664 SHEET J Ref. 6-5-21 E7 9/5/21 Curve Labels: (59) DE MARTIS (65) USA EXIDE 6 LXR-9-1 (63) C.A.V. WILLARD. 12 XR 3/1 (61) EXIDE [all] (57) TUDOR (60) C.A.V. WILLARD. R.R. | ||