How do you wrap an 18650 battery?

To wrap an 18650 battery, carefully apply heat from top to bottom and rotate the battery as you do this. A few seconds of heat should be enough to shrink the wrap in place, but be careful not to apply too much heat, as it can melt the wrap. Once you’re done, you can label the cells with a marker or put stickers on it with the actual manufacturer information.

What is a battery wrap & how does it work?

The process is the same for 18350’s, 20700’s, 21700’s, 20650’s, even the everyday batteries such as double A’s (AA) and triple A’s (AAA). The outer wrap is there to protect the battery casing and provide a barrier between the metal housing and any possible external contact.

How do you replace a battery insulator?

Prepare the new wrap and slide it over the battery. Be sure to leave approximately 3mm overhang at the top and bottom of the battery. Next place the paper insulator on the positive terminal. If the paper insulator is damaged, replace with a new one. Use a hairdryer to apply heat to shrink the wrap around the battery.

Is it safe to use a battery wrap?

You should never compromise safety. The condition of the battery wrap is extremely important in terms of whether the battery is safe to use. The outer case of the battery needs to be protected at all times to avoid any possible shorts.

What happens if a battery wrap is damaged?

If the battery wrap is damaged (frayed, torn, ripped etc) it could cause a short circuit. Using a battery in this condition is extremely dangerous! If the exposed metal comes in contact with your vaping device it could potentially catch fire or even explode! The same is true of a battery not transported properly.

What size shrink wrap for 18650 battery?

To re-wrap a damaged battery for safety, follow this tutorial. You can get the shrink wrap from Fast Tech. The size you need for 18650 batteries is 29mm. The tutorial explains how to make your battery look new or even better than new.