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).
Instructions for tests on a 'Sandwich' battery composed of various standard cell types.
| Identifier | ExFiles\Box 54\1\ Scan193 | |
| Date | 7th December 1925 | |
| RR. 300 (20 Bks.) (SK 354 5-12-22 MP 264049) X 467S 108706 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: C.F.B. Date: 7-12-1925 Order No.: Customer's No.: Re: J.B.135. Re Tests on Sandwich Battery SY This battery consists of 2 Standard Exide cells, 2 Standard P&R, 1 Oldham, & 1 Fuller. All the cells were sandwiched in a charged condition. On open circuit the cells showed practically an equal voltage of 2.1 per cell. A Low Rate Discharge through an invariable external resistance of 1.80w was taken & 59 ampere hours were realised. Then on open circuit but discharged, the cell voltages were taken & tabulated. It was then given a charge & when gassing fully the voltages were again taken & tabulated. Signed: (contd) This Sheet must be filed on completion of the work. | ||