Product Details:
Flat: 72 mm x 31 mm.
These are incredibly durable and will safeguard your batteries.
Simply lay the 18650 battery inside, leaving an equal amount of space on either end, and heat the wrap with a hairdryer or heat gun until it shrinks to fit the battery snugly.
You run the danger of shorting your smartphone if you have any tears or expose the battery's underside. Your battery wraps should not be torn; if they are, you can re-wrap them to safeguard yourself and your device. Protection is crucial for your safety.