18650 Battery Heat Shrink Tubing — Clean, Insulated Sleeve Covers for Single Cells and Packs
Anyone who has rebuilt a battery pack or repurposed 18650 cells knows the frustration of bare, unprotected cells rattling around with worn or missing wraps. Damaged sleeves expose the cell casing, create short-circuit risks, and make it nearly impossible to identify polarity at a glance. Whether you are a hobbyist building e-bike packs, a technician refurbishing power tool batteries, or a maker working on DIY flashlight builds, having the right 18650 battery heat shrink tubing on hand is a basic safety essential.
This PVC heat shrink tubing is available in flat widths from 50mm (≈1.97") to 75mm (≈2.95"), sold in lengths of 1 meter (≈3.3 ft), 5 meters (≈16.4 ft), and 10 meters (≈32.8 ft). The tubing is made from PVC (polyvinyl chloride) with a generally 2:1 shrink ratio, and comes in 13 color options including Black, White, Red, Blue, Yellow, Green, Oliver Green, Grey, Purple, Orange, Orange-Red, Light Yellow, and Transparency. Cut to length, slide over your cell or pack, and apply heat to achieve a firm, form-fitting sleeve.
Common use cases include rewrapping individual 18650 cells for lithium-ion battery pack rebuilds, color-coding cells by capacity or charge state in multi-cell flashlight and vaping mod builds, and insulating grouped cells in DIY electric vehicle or RC battery packs. The wide width range makes this tubing suitable for single-cell sleeves as well as small parallel cell groups.
🛒 Select your width, color, and length above, then add to cart — ships from our US warehouse.