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).
Report comparing the capacity and performance of P&R and Exide units during a high rate discharge test.

Identifier  ExFiles\Box 168b\3\  img078
Date  30th October 1930 guessed
  
2
JD{J. Draper - Frames}102.
The P&R had the greater capacity.
On High Rate Discharge
Initial amperes = 104.3
Time to 104 " = 2.6 min
" " 100 " = 8.5 "
" " 90 " = 18.0 "
" " 84.5 " = 20.0 "
The P&R was the better on this test also & the Exide shewed positive weakness.
No 1 cell in the Exide unit was worse than the other two.
The Cadmium readings are as follows.
P&R.{Sir Henry Royce}
Positive .20
Negative .35
Exide
No 1 cell. Positive .5
Negative .3
average of { Positive 1.7
2 cells { Negative .3
G.J.
  
  


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