DC to DC 5V 1.5A Volt Voltage Charger Step-up Power Module USB Output Features Non-isolated DC-DC Step up module Input voltage: DC 1 - 5V( if you need the output 5V 1A, please use the Single 3.7V lithium battery input or voltage which is more than 3.3V, if the input voltage is too low and the out current is very
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