CRGR - 18650 power bank

thingiverse

I have a large collection of 18650 batteries, so I ordered several USB step-up boards and created this compact but powerful charger.\r\n\r\nCurrent iteration is at number 12, so I spent some time to make it as perfect as possible\r\n\r\nThis model fits the USB boost converter perfectly and even accommodates slightly longer batteries.\r\n\r\nUse a spring terminal in the deep end; the wire should go into a long groove on the side\r\n\r\nAny excess wire can be tucked under the PCB, just ensure that the micro USB is seated properly first.\r\n\r\nThe board I used is the "DC-DC Step Up Power Module Boost Converter" from AliExpress, which cost me around $7 for 5 units\r\n\r\nA picture of the module is attached; if you want to build this power bank, it will give you an idea of what to purchase.\r\n\r\nCurrently working on 2xCRGR and 3xCRGR models for those who need extra power ;)\r\n\r\nUpdate:\r\nI have uploaded the 2xCRGR 18650 power bank here - https://www.thingiverse.com/thing:2769739\r\n\r\nThe 3xCRGR 18650 power bank can be found here - https://www.thingiverse.com/thing:2780597