20PCS Li ion 18650 Battery Wrap PVC Heat Shrink Tubing Precut 9 Color Choice Battery Film Tape Battery Cover|Cable Sleeves| - AliExpress
DIY Battery Pack PVC Heat Shrink Wrap Tube,Black 150±3MM Flat Width 3M Length for Big Battery Pack Power(If You are not Sure What Size You Need,Pls Email to me When u Place
100pcs Flat Pvc Heat Shrink Tubing Battery Wrap For 1 X 18650 Battery Shrink Film - Cable Sleeves - AliExpress