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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).
Letter from Peto & Radford concerning battery discharging and draining instructions.

Identifier  ExFiles\Box 54\1\  Scan038
Date  5th October 1925
  
X467P

Works, Dagenham Dock, Essex

TELEPHONE VICTORIA 3667.
5 LINES. PRIVATE BRANCH EXCHANGE.
TELEGRAMS CONCENTRATION, SOWEST, LONDON.

Manufacturers of P&R Accumulators. Established 1889.
PETO & RADFORD
Proprietors - Pritchett & Gold and E.P.S. Company Ltd.
50 GROSVENOR GARDENS,
LONDON, S.W.1.

DIRECTORS:
SIR ARCHIBALD C. GOLD
WILLIAM PETO
F.C. GRAHAM MENZIES
C.R.D. PRITCHETT
O.R.N. MINCHIN
T.W. PRITCHETT

YOUR REF. ______
OUR REF M/5.

5th October 1925.

Messrs. Rolls Royce Ltd.,
DERBY.

For the attention of Mr. Fowler Clark.

Dear Sirs,

With reference to your letter of September 21st, EFC2/T, the two cells referred to have not yet arrived but we are keeping a look out for them.

With regard to the discharging of batteries, our remarks that we gave you in a recent letter about instructions to battery users re discharging down to one volt apply in this instance and we think the instruction should be modified accordingly.

The instructions about draining out batteries were really written in the days when the corrugated ebonite or celluloid separator was more universal and before the days of the wood separator. When a battery fitted with wood separators is empty a large amount of the electrolyte remains in the wood which it is impossible to get out and the battery is liable to sulphate, so that in the case of an R.R. starter battery the draining out process is not as good as keeping it charged every few weeks.

Yours faithfully,
PETO & RADFORD.

G.R.N. Minchin
  
  


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