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Show Good Battery Cheapest for a Good Radio Set Cheap dry batteries generally are short-lived and fail to render good service even during this period. The cheapest battery in the long run is the most expensive in the first place. Good materials are essential to produce good ' batteries heavy seamless zinc cans, for instance, instead of flimsy, solder-seamed solder-seamed cases; good chemicals, with the muslin bag construction instead of j the crude wet blotter; proper insula-' tion between cells in the assembly of t he block, and so on. It pays to buy a good battery at any time. : |