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).
Specification sheet detailing two proposed battery types with their dimensions, weight, and capacity.
| Identifier | ExFiles\Box 58\4\ Scan114 | |
| Date | 29th August 1933 guessed | |
| -2- Messrs.RollsRoyce Ltd., Separation - Wood and ebonite. Overall Dimensions - 22 1/4" long x 7 3/8" wide x 9 5/16" high without cover, or 9 15/16" high with cover. Weight - Without cover 88 lbs. dry or 100 lbs. with acid and charged. Weight of wood cover 3 1/2 lbs. Thickness of positive plates - 1/8" " negative " - 1/8" intermediate, 3/32" end. Plate pitch - 1/2" Capacity - 95 amp.hrs. at the 20-hour rate to 1.80 volts per cell. New Battery type 6-XSL11-1L in Monobloc Container. This battery would be mounted in a monoblock ebonite container with or without a moulded ebonite cover. In general the design follows the existing type 6-XSM7-1L battery, but with 1/8" thick positive and negative plates. We enclose herewith a copy of our drawing GA.57940 showing details of this battery, the technical data for which is given below:- Battery Type 6-XSL11-1L. Assembly - Monobloc ebonite container with or without moulded ebonite cover. Intercell- Lead-coated copper bolted to terminal pillars. Connections Separation - Wood and ebonite. Overall Dimensions - 19 1/16" long x 6 3/4" wide x 10 3/16" high without cover, or 11" high with cover. Weight - Without cover 83 lbs. dry or 94 lbs. with acid and charged. Weight of cover 3 lbs. Thickness of positive plates - 1/8" " negative " - 1/8" intermediate and end. Plate pitch - 1/2" Capacity - 90 amp.hrs. in 20 hrs. to 1.80 volts per cell. We trust that you will consider these two proposed | ||