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).
Graphical log from a continuous current battery charging test for an 'Exide TR' battery.
| Identifier | ExFiles\Box 54\2\ Scan130 | |
| Date | 6th July 1926 | |
| 6-7-26 Exide TR {Capt. F. W. Turner - Finance} 75 a.h. 100 lbs. X46/7 charged at a continuous current of 6 amperes. Average amperes = 6.31 Hours = 9.2 Amper Hours = 58.1 .581 1.80w REGD. TRADE MARK 'MEGGER' | ||