NiMH charger box with cooler mount

thingiverse

This is simple box with removable lid that's supposed to hold NiMH charger circuit [from aliexpress](https://www.aliexpress.com/item/4000557338699.html) and contains bottom vents for fan to keep the circuit cool. Air intake is from above, exhaust is at bottom. There are 4 circle guides for 10mm legs (printed separately) that should be glued to the bottom so the fan is not blocked from bottom. You can omit the legs, but make sure you don't put your charger on the bottom or it won't cool as well. The square hole with pillars is where the circuit is mounted, should not be covered as it also serves as air intake. The pillars on the lid, are supposed to face inwards with circuit mounted also inside the box. Following screws & nuts are needed: 4x M2 15mm (holds circuit) 4x M3 20mm (holds fan) 4x M4 10mm (holds lid) Circuit dimensions are 30x15mm Fan is 30x30x10mm 5V fan (same input voltage as charger circuit) FreeCAD & Prusa files can be found in this repo https://github.com/Meyhem/charger-box