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).
Test report detailing battery cell densities, charge, and discharge measurements.
| Identifier | ExFiles\Box 48\3\ Scan038 | |
| Date | 22th March 1921 guessed | |
| -2- Contd. Date:- (11) Cell densities :- (1) Acid Low in cell (4) acid low in cell (2) 1140 (5) 1120 (3) 1100 (6) 1100. )12) Third charge equivalent to average current of 5.0 amperes for 20 hours. i.e. ampere-hours = 100 (13) Discharge at 10.0 amperes to 10.0 volts. Total hours :- 5.58 Ampere hours realised :- 55.8 (Handwritten dates in right margin): 22-3-21 22-3-21 31-3-21 4/4/21 (Upside-down text at bottom): R.R. 286A. (100) (T) (S) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 648. 19-3-20 G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2618 | ||