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Analysis of a Fuller cell battery failure after 10,000 miles and 2 years of testing.


Identifier  ExFiles\Box 54\1\  Scan289
Date  17th August 1928
  
RR 236 (150 BKS.) (DB {Donald Bastow - Suspensions} 431-6 12 24) MP 306975
X46175
ROLLS-ROYCE, LTD.
INSTRUCTIONS.
To: G.F.G.
Order No.: JE119
Customer's No.: X46175
Date: 17-8-1928
Re Failure of Fuller cell in SZ Battery(17)
No 1 cell failed in this battery after having run 10000 miles + 2 years on our bench life test.
The negative plates were good. The positive plates had lost a large amount of paste + the grids were intact but very frail & easily crumbled.
The wood & ebonite separators were good. Moulded U strips of hard rubber were fitted over the edges of the positive plates to prevent shorting by buckling of the plates. I do not consider these should be necessary if the wood & ebonite separators were of a good size & overlapped the plates slightly.
The cause of failure was due to accumulated sediment which reached up to the plates causing a short.
Signed: G.J.
This Sheet must be filed on completion of the work.
  
  
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).


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