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).
Letter from Alklum Storage Batteries Ltd. detailing battery specifications and testing methods.
| Identifier | ExFiles\Box 164\4\ img135 | |
| Date | 4th November 1933 guessed | |
| ALKLUM STORAGE BATTERIES LTD. CONTINUATION SHEET No. 2. Messrs. Rolls-Royce, Ltd., DERBY. are put up in the formulae as shown below:- Internal Resistance E₁ - E₂ / I₁ - I₂ or 1.22 - 1.05 / 24 - 6 = .17 / 18 = very nearly .0095 Ohms. The figures here given are merely as examples and are not actual readings obtained but enable you to arrive at a method of testing. d) Weight of the battery is 102 to 105 lbs. e) The dimensions put forward in our letter do not include a lid{A. J. Lidsey} and 1" should be added to the height for this purposes. We hope that these are the answers that you are desirous of having before placing an order with us for a trial battery. Yours faithfully, ALKLUM STORAGE BATTERIES LTD. [Signature] MANAGER. | ||