In my previous log, I have updated that I will use a 18650 battery instead of 14500 battery and SMD LED instead of a straw hat LED. Due to these changes, the old enclosure will no more work. So, I have redesigned the enclosure to accommodate the bigger battery and SMD LED. The new design also included an arrangement for hooking this lamp to a backpack during camping and trekking, so that the battery will charge continuously.
Pictures for new Enclosure Design :
Rendered Picture of Final Product :