Buy one of these and tune or replace the battery if it’s too heavy or too weak:
Dental Product For Dentist Lamp/round Beam Light - Buy Dentist Lamp,Dental Product,Dental Lamp Product on Alibaba.com It runs an XP-G2 at 450m mA. The supplied battery (2x18650) lasts all day long. They also have a wireless one.
I’m using it with MO Optics 4x Vinkep loupes (highly recommend them) and a selfmade Nanjg AK-47A 1x 18650 Battery at 1 A. I wouldn’t want less light. The 3400 mAh 18650 drains in about 2:30 but is easy to change. I’m looking into upgrading to a 2S battery with a buck driver for more endurance though.
best Phil