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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 and recommendations for car battery maintenance and care, page 4.

Identifier  ExFiles\Box 26\2\  Scan409
Date  22th October 1930 guessed
  
-4-

abnormal wear and tear.

Batteries must never be allowed to remain in a discharged condition.

Inspection and renewal of Electrolyte.

"The levels......... acid of density 1.280."

Testing for condition of charge.

"We recommend that a small voltmeter be carried. The reading....... discharged condition."

Failure of one or more cells.

"If, when the battery............ of the battery.

Charging in Garage from External Source.

{In regard to this section, which has already been re-arranged by ourselves in collaboration with the Chloride Co. we suggest that the matter of 19, 20, 21, 22, 23 & 24 in the Exide pamphlet be incorporated, if necessary suitably modified by the P & R Co. to suit their make of battery. It will be realised that a portion of the paragraph in the present pamphlet concerning charging the battery in position on the car is now covered by the matter contained in Chapter 3 of the R.R. Instruction book.}

{The section "Use of Starter" will be omitted as this is covered by the matter contained in Chapter 3. of the R.R. Instruction Book.}

Battery out of Commission.

{As in present P & R pamphlet.}

Despatch of Battery.

{As in present P & R pamphlet.}

Battery Stored or Despatch Unfilled.

{As in present P & R pamphlet, with the exception that in (4) "regrease" should be "re-vaseline".}
  
  


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