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Save money and be, eliminating the need for frequent battery replacement It can be powered by a mobile power supply, computer, or USB adapter Input USB 5V2A, output 3V1A, to use instead of 2 1.5V LR14C batteries Suitable for electronic product such as toy, stove, water heaters, desk lamps, using 2 LR14C batteries Can be used for devices that power two 3V LR14C batteries simultaneously