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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 the re-examination of a Tungstone cell, detailing its disadvantages in weight and dimensions.

Identifier  ExFiles\Box 35\4\  scan 169
Date  18th January 1926
  
RR 300 (20 Bks.) (SK 354 5-12-22 MP 264049)
X7830
108718
ROLLS-ROYCE LIMITED.
INSTRUCTIONS.
To: C.T.B.
Order No.:
Re: J.B.146.
Customer's No.: 3820
Date: 18-1-1926
Re Examination of Tungstone cell.
The first big disadvantage of this cell is its great weight, a 12 Volt 75 ampere hours battery is estimated to be 115 lbs dry & with acid it would be in the neighbourhood of 130 lbs which is 20 lbs more than our specification allows. Another disadvantage are the dimensions. The estimated dimensions for a 75 ampere hour battery are 17" long 11" wide & 7 1/2" high. (when arranged in two rows of three) this being much too wide although not so high.
The cell lid{A. J. Lidsey} being of die-cast antimonial lead is liable to cause leakage.
The approximate weight of for a 50 ampere
Signed:
(cont'd)
This Sheet must be filed on completion of the work.
  
  


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