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).
Instruction book extract detailing the care of accumulators.
| Identifier | ExFiles\Box 26\2\ Scan086 | |
| Date | 15th January 1920 | |
| x 995 copied 15/1/20 INSTRUCTION BOOK. Extract from Proposed Instruction Book Matter regarding the Care of Accumulators. [Handwritten Annotation]: Orig Copy sent to C.E.S Co. for consideration THE CARE OF ACCUMULATORS. CAREFUL OBSERVATION OF THE FOLLOWING SIMPLE RULES WILL ALMOST INVARIABLY SECURE SATISFACTORY RESULTS. DISCHARGING RULES. DO NOT DISCHARGE THE BATTERY TOO LOW. DO NOT DISCHARGE ANY CELL BELOW 1.8 VOLTS (MEASURED WHILE A DISCHARGE CURRENT IS PASSING). DO NOT ALLOW THE BATTERY TO STAND COMPLETELY DISCHARGED. CHARGING RULES. THE BATTERY MUST ALWAYS BE CHARGED IN THE RIGHT DIRECTION. THE POSITIVE TERMINAL (+) OF THE BATTERY MUST BE COUPLED ON CHARGE TO THE POSITIVE CHARGING MAIN. DO NOT ALLOW THE BATTERY TEMPERATURE TO EXCEED 100°F.{Mr Friese} ON CHARGE. DO NOT EXCESSIVELY OVERCHARGE. WORKING RULES. KEEP THE ELECTROLYTE AT THE PROPER SP.{Mr Spinney} GR.{George Ratcliffe} (1.200 TO 1.250 WHEN FULLY CHARGED) AND THE PROPER HEIGHT ABOVE THE TOP OF THE PLATES. R R & Co LTD (T & S) B & C 6-19 C 2400 | ||