Hi all,
After searching for a lightweight, powerful rechargeable headlamp I zeroed in on this one: Nitecore NU20 rechargeable LED Headlamp 47g. It's also a real bargain 30% off using code: 2017FNL at link below...cost A$26.98 free delivery. I have used this site before and it's very good. Thought I would share...
https://www.banggood.com/Nitecore-NU20-XP-G2-S3-360LM-USB-Rechargeable-Lightweight-LED-Headlamp-p-1114655.html?rmmds=search