headlight 18650 battery cover with USB charger

I designed li-ion 18650 battery cover with 03962A USB charger from China instead original 3xAAA battery cover. It is wery handy also with cap on my head and charging is very simple, just connect. Grips for belt must be cutted after printig to get belt into grips. I printed it from PLA, cover is glued with hot glue gun.