XT30 Power Bank

thingiverse

I designed this because I hate nothing more than discharging batteries. Sometimes you go out, reach the spot, and it starts raining. So you go back home and start discharging your batteries, effectively converting electricity into heat. With this thing you can simply discharge your batteries into devices that can be charged via USB. The components are super cheap. This is a remix of one of my previous designs. I improved the following things: * Inset the buzzer pins * Minimized height * Optimized for XT30 plug 2-6S LiPo to 5V USB power adapter. Ideal for all RC enthusiasts who also need 5V on the go - and you know you need it (eg. to charge your phone, smaller flight packs, your transmitter or power your goggles). You will need the following parts: * [5V, 3A USB DC/DC converter](https://aliexpress.com/item/4000511498136.html) * [Battery Buzzer](https://goo.gl/nv0tjx) * [XT30 connector](https://www.banggood.com/10-Pairs-XT30-2mm-Golden-Male-Female-Plug-Interface-Connector-p-1414120.html?p=EL26103618053201601Y) * 2x M2x5mm screws to secure the PCB, you can also just glue it in place. Print top and bottom. I sanded the bottom part down to make it nice and flat for later assembly. Insert the 5V USB PCB into the bottom part, you can screw it in, or simply glue it in. Add wires to your XT30 connector before gluing it in place. Strip your battery buzzer from its protective shrink wrap, test fit the pin header in the slot and glue the buzzers to the case. Make sure none of the parts is moving. Solder the wires from the XT30 connector to the USB PCB. Now put together top and bottom in any direction you like - I prefer input to be on one and output on the other side. The parts should hold together well enough so you can easily glue them together.