CONCLUSION 



The tests show that it is practical to use lead-acid batteries 

 in pressure -equalized, oil -filled cases as the primary power 

 supply for the bathyscaph or any other deep experimental 

 submersible craft that can handle their weight. The pressures 

 and temperatures encountered in the oceans, to any depth, 

 have no significant effect on lead-acid battery operation, 

 capacity, or rate of discharge. 



RECOMMENDATIONS 



1. Use externally carried lead-acid storage batteries as 

 the primary power supply for the TRIESTE. 



2. Extend the investigations reported herein to include 

 other types of "wet" batteries for similar uses. 



3. Initiate investigation to determine other areas of use 

 for this type of power supply, such as unmanned buoys or 

 ocean-bottom instruments. 



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