18650 Batteries

The cells that go inside a removable-battery mod. If your device takes a battery you can take out, this is the shelf.

Most mods on our shelves take 18650 cells, and the number that matters is the continuous discharge rating, not the capacity on the wrapper. We stock BestFire IMR 2500mAh and BestFire IMR 3000mAh, plus Efest IMR 3000mAh.

Three rules worth more than any spec. Buy cells in matched pairs and keep each pair together for its whole life, because mixing a tired cell with a fresh one is what stresses a battery. Replace a wrap the moment it tears, since a nicked wrap against a metal mod is a short. And never carry a loose cell in a pocket with keys or coins: a battery case costs less than a dollar.

Charge them outside the device where you can. An external charger balances each cell and runs cooler, and heat is what wears a lithium cell out. Mods that take these are on box mods and tanks.