USB Portable Battery Charger Box
thingiverse
A box that will hold a 12 volt 6.0 or 7.2 amp hour sealed lead acid battery and four USB ports for charging phones, tablets, or whatever. We've set it up with a 5 watt solar charger so it can be used anywhere. The top is designed for the "MakerHawk 4pcs USB DC-DC Voltage Buck Regulator Step Down Power Supply Module 9V 12V 24V to 5V Dual USB Output Buck Voltage Board 3A 6-26V Car Charge Charging Regulator boards" currently available from Amazon.com. It holds two of the boards so there will be a total of four USB ports when completed. 5mm M2 screws hold the boards in place and the cover can be secured in any way you find works for you.
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