These wraps fit all your 21700/20700 batteries.

Price is per battery wrap.

Tips
We highly recommend that you use a hairdryer when applying the new wrap. The old wrap MUST be removed first! Also, don’t lose the top plastic ring of your battery, it comes off with the old wrap.

Damaged batteries can be dangerous, nicks and tears in the sleeves can cause direct shorts lead to battery venting and even fires. This solution is not only cheap its effective and very easy to apply.