| 11. | In United States waters, environmental regulations now require proper disposal of primary batteries removed from navigation aids.
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| 12. | As of 2007, AAA batteries accounted for 24 % of alkaline primary battery sales in the United States.
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| 13. | A "'lantern battery "'is a rectangular battery, typically an zinc-carbon primary battery, used primarily in flashlights or lanterns.
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| 14. | As of 2007, C batteries accounted for 4 % of alkaline primary battery sales in the United States.
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| 15. | Lithium primary batteries are also useful at lower temperatures than zinc batteries, all of which have water-based electrolytes.
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| 16. | Some types of primary batteries used, for example, for telegraph circuits, were restored to operation by replacing the electrodes.
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| 17. | Space vehicles have successfully used solar photovoltaic systems for years of operation, eliminating the weight of fuel or primary batteries.
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| 18. | Lithium primary batteries have a lower internal resistance than zinc primary batteries and so are more efficient in high-drain flashlights.
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| 19. | Lithium primary batteries have a lower internal resistance than zinc primary batteries and so are more efficient in high-drain flashlights.
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| 20. | Disposable alkaline batteries are classed as primary batteries; manufacturers do not support recharging, and warn that it may be dangerous.
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