A HISTORY OF EDISON'S WEST ORANGE LABORATORY 1887-1931

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Unfortunately problems soon appeared in this product. With characteristic determination, Edison set about finding the bugs which caused the leaks and the capacity loss. During charging and discharging, these electrodes would swell and shrink. Because this continual change, electrical contact between the nickel oxide granules and the grid pockets was reduced, thus increasing the internal resistance cell and lowering its electrical output.VIII-17 rapidly ahead manufacturing and marketing this new product. Even worse was the substantial drop in electrical capacity the battery after period use.^ As customers reported these difficulties, Edison realized that had not fully tested his new battery and recalled all the defective cells November 1904.^5 Eventually, traced the capacity problem the nickel oxide electrodes. Over the next five years, Edison undertook thousands additional experiments to identify the cause this problem. Nevertheless, the Type sold well, and 14,000 cells were installed electric cars and 23 trucks 1903 and 1904. The battery leaked because the caustic electrolyte ate through the solder along the seams the battery's outer steel can. Edison overcame this . Edison found that this new battery, which dubbed the Type E, performed better than most the competing lead-acid cells, but cost more manufacture. While and his men easily eliminated the leaks switching from soldering to welding the seams the battery's outer can, the capacity problem proved far more vexing