Thermally conductive battery adapters?

[Pstool]

I’m documenting the process of switching from 21700->18650 plastic adapter to a inner copper tube on a Convoy Z1:

Convoy Z1 + LEP emitter

Update on thermals First I got the spare Z1, disassembled and stored the W5050sq3 3000k [IMG_4279] Pre-squeezed the copper tube with a 2mm slot until it fitted on the flashlight: [IMG_4280] [IMG_4281] [IMG_4282] Applied some AS MX6 thermal paste and spreaded a little [IMG_4283] [IMG_4284] Started inserting the inner tube and moving the clamps little by little, at some point the mallet was needed [IMG_4286] [IMG_4287] [IMG_4288] [IMG_4290] [IMG_4292] Some excess tube to cut an…