Review on π DZS Elec Mini DC 5-36V USB Buck Converter Regulator Power Supply Module - Step Down Voltage Module for 36V 24V 12V to 5V 3A USB Charging by John Ford
Works well but drains the battery even when nothing is plugged in.
For some reason this thing is draining my battery even with nothing plugged into the USB. Didn't expect that. I have to pull out the 9V, I have a cable when I'm not using it, otherwise it's completely discharged the next day. Tested with two fresh 9Vs and nothing connected to the USB port.
- Free for educational purposes
- Upgradable
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