18650 battery storage box collection

Some simple and functional 18650 battery boxes from 1 up to 12 batteries. UPDATE 12/Aug/2016 -Inside diameter increased to 20mm for prevent battery shell scratches. -Added more models and combinations for 1 and 2 rows form. Contribute by donating: - This designs has a lot of effort and testings, so please if you like it and found usefull consider to make a donation, any amount will be really apreciate and you will contributing with improved and future designs. You can donate here: http://villamanydonate.blogspot.com Thank you!