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).
Battery life and guarantees from the De Martis and Edison companies.
| Identifier | ExFiles\Box 1\7\ B001_X15 20 46 50 59-page269 | |
| Date | 18th October 1922 | |
| X. 50. EFC. from ROY.{Sir Henry Royce} ROY{Sir Henry Royce}22/MG/18.10.22 ----------------- Following our conversation yesterday re Batteries, and the statement made by the De. Martis Company that 12/18 months was all one could expect as the life of such Batteries in this country, I notice the Edison Company are now guaranteeing their Batteries for use for Traction purposes for a period of 8 years. Copy of Guarantee attached. ROY.{Sir Henry Royce} ENCLOSURE. [STAMP: RECEIVED OCT 18 1922 SH] | ||