How big should a heat shrink battery be?

Since most heat shrink has a shrink ratio of 2:1, we need a piece of heat shrink with a half circumference size of at least 9 inches. But we also need to make sure that the heat shrink is less than twice the size of the battery, meaning it can’t have a half circumference size of more than 18.

What size heat shrink tube for 68mm battery?

For a 68 mm battery, the heat shrink tube should be about 3 mm longer than the battery at both ends, which is a 71 mm tube. The new tube for the battery has been cut to size. The old heat shrink is removed using fingers, not a knife or scissors.

What is heat shrinkable tubing?

Heat shrinkable tubing is primarily available in 2:1 or 3:1 shrink ratios meaning the tubing has been expanded to twice or three times its fully recovered size. The greater the size variations of the underlying materials being covered, the larger the shrink ratio required. For example:

How do I determine the shrink ratio of heat shrinkable tubing?

2. Determine the shrink ratio of the tubing. Heat shrinkable tubing is primarily available in 2:1 or 3:1 shrink ratios meaning the tubing has been expanded to twice or three times its fully recovered size. The greater the size variations of the underlying materials being covered, the larger the shrink ratio required.

How do you heat shrink a battery wrapper?

To heat shrink a battery wrapper, first, do not try to bend the protection PCB out to get a look at the battery. Next, put the new heat shrink onto the battery, leaving about 3 mm extra at each end. Then, apply heat and rotate the battery while swiping the heat gun back and forth to shrink the heat shrink.

How much does heat shrink tubing shrink?

Take into account the change of length of the recovered tubing (after shrinking). Longitudinal shrinkage varies from 5% to approximately 10% - depending on the material. Heat Shrink Tubing Vocabulary - get everything you need to know about heat shrink tubing from Hilltop Products.