Rolls-Royce Archives
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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).
Calculation of ampere-hours for a fifth charge.

Identifier  ExFiles\Box 38\5\  Scan182
Date  16th December 1921
  
Contd.
(4)
Date.
(18) Fifth charge equivalent to average current
of 6 amperes
for 18 hours
i.e. ampere-hours = 108
16.12.21
  
  


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