Screw Lid 21700 Battery Holder
This single 21700 battery holder is designed to withstand serious abuse! It is printed from strong PETG to prevent dents or damage to your battery. The flexible retainer strap prevents the lid from getting lost.
These battery holders work with unprotected flat-tops and button top cells without built-in charging only. Batteries with significantly wider bodies than 21mm and longer than 70mm will not fit.