20700&21700 Battery Wrappers

These wrappers are designed for 20700/21700 battery.

How to add a battery wrap to your battery:

1.  Take off the old skin from the battery by carefully pealing it off. There will be a part at the top the looks like ring / a washer, it may come out but it needs to stay in. This spots the battery from shorting.
2. Grab your self a heating tool e.g. hair dryer or heat gun.
3. Place the new wrap around the battery.
   
4. Using a heating tool to melt the plastic around the battery in a safe manner.