I have used it to isolate/protect both single 18650 cells and pairs. I've also used it to seal circuit boards to hold wires and relieve stress - once shrunk you can "play" with the heat gun in places that are still crumpled or need a little softening/reshaping. Since it is transparent, all covered LEDs are still lit.
Xiaomi BHR5846GL Redmi Buds 4 Wireless Headphones White, white
50 Review
Get Organized With MILAPEAK'S 280Pc Dual Wall Adhesive Heat Shrink Tubing Kit For Marine Cable DIY Projects
33 Review
Hankook Tire Winter i*Pike RS2 W429 185/65 R15 92T
86 Review
Pirelli P Zero 275/35 R20 102Y summer
64 Review