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.
Pirelli P Zero 275/35 R20 102Y summer
64 Review
Get Organized With MILAPEAK'S 280Pc Dual Wall Adhesive Heat Shrink Tubing Kit For Marine Cable DIY Projects
33 Review
10PCS Rhymad Conductor Compact Lever Connectors With Fixed Base, 28-12 AWG Electrical Wire Terminals For 2 Circuit Inline Splices (SPL-2)
43 Review
Smart socket Xiaomi ZNCZ05CM Mi
73 Review