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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).
Proposal for an experiment to test charge a battery using an invariable external resistance and sustained voltage.

Identifier  ExFiles\Box 54\2\  Scan098
Date  26th June 1926
  
Contd. -4- EFC {E. Fowler Clarke - Electrical Engineer} 1./T26.6.26.

because it does have some bearing on the question of the satisfactory use of a generator and controller subject to ideal control from the generator point of view.

Perhaps the most practical method of test charging a battery with such a charging characteristic is to insert in series with the battery an invariable external resistance of .25 ohm wit and charge the battery through this resistance with a sustained voltage of 17.0. We propose to do this as an experiment and observe whether the capacity of a battery is to any extent reduced as compared with charging at definitely constant current.



EFC. {E. Fowler Clarke - Electrical Engineer}
  
  


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