Mini portable power supply 5Vcc-50Vcc

thingiverse

I designed this portable box to power rail relays on the go;\r\nThe box employs a step-up modulator powered by a rechargeable 4.2V 18650 lithium battery; the voltage is adjustable via potentiometer, with an output range of up to 50Vcc; there's a button to check the output voltage or battery level directly on the display; A built-in protection circuit safeguards the battery and ensures safe charging via micro-usb.\r\n\r\nTo get started:\r\n\r\nYou'll need:\r\n\r\n1: TP4056 LiPo charger https://goo.gl/hiqBMV\r\n2: Banana plug https://goo.gl/sJ7zqU\r\n3: 18650 rechargeable battery https://goo.gl/xHL1v3\r\n4: 4 M3 x 8mm screws or similar alternatives https://goo.gl/uPqPjj\r\n5: A toggle switch https://goo.gl/kryXkC\r\n6: A step-up module with display https://goo.gl/1Sv3zk