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The Essentials in 10 Seconds
- Large Format: Designed strictly for the thickness and length of modern 20700 and 21700 batteries.
- Safe Travel: Mandatory if you carry loose batteries in your bag or pocket.
- Anti-Shock Mold: Batteries do not move inside, keeping their plastic wrap intact.
The armor for your giant batteries
Carrying high-amp lithium batteries without protection is a risk no vaper should take. Accidental rubbing with keys, coins, or other metal objects will close the battery circuit instantly. This Efest 21700 Case completely isolates the poles of your spare batteries. It offers a strong lock so you can take your batteries anywhere with total confidence.
Questions and Answers about the Efest 21700 Case
Can I use it to carry 18650 batteries?
You can, but it is not recommended. Because this box is made for thicker and longer batteries, 18650s will move around and make noise while walking, which could damage their poles.
Will 21700 batteries fit if they have very thick replacement wraps?
Yes. Unlike other ultra-tight cases, the Efest design leaves a tiny margin of space. This is very useful if you have put a double or thicker heat-shrink wrap on your battery.
