18650s are certainly the most common batteries in vaping. They are readily accessible, reliable, and widely tested, and the huge majority of mods come with 18650 compatibilities. While newer batteries, for example, 20700 and 21700, have increased the stakes, we rarely see them in dual or triple battery vape mods because of their larger size. Manufacturers still lean on 18650 battery as they mix a smaller size with tried plus tested performance.
Due to the large accessibility of 18650s from electronics manufacturers, this list does not contain any rewrapped batteries. However it is not unusual for 18650s to be counterfeited, thus always do your research plus only purchase batteries from trustworthy vendors.
How we picked the batteries
Selecting “best batteries” is not something to pick just based on subjective likes. While our global team of experts and vape enthusiasts use the batteries on our lists, our recommendation and product selection might not have taken place without first going over the data presented by Battery Mooch.
Battery Mooch (or just Mooch) is the vape community’s skilled tester of batteries. For a few years now, he has been supplying the community with in-depth and trustworthy testing for the majority of batteries used in vaping.
This is not his list of finest batteries, however, all these batteries have been confirmed by his battery charts to be worthy of inclusion.
Continuous Discharge Rating (CDR)
This is the rating that is used by trustworthy electronic manufacturers, plus the one rating that we could use to compare battery discharge. When precisely rated, it indicates the current that a battery can be securely discharged at a continuous rate without taking damage otherwise reducing its capacity.
Calculated in mAh (milliampere-hours), the capacity of a battery indicates its running time. One mAh is equal to the charge transferred by a stable current of one mill ampere flowing for one hour. While this rating is sometimes overstated on battery wraps, this does not happen as often as it does by discharge ratings.
Going over the ratings of trustworthy manufacturers, you would notice a pattern: there is constantly a trade-off between CDR and capacity. There is (still) no 18650 by a CDR over 30 amps. simultaneously, no 1850 battery with a capacity at or over 3000 mAh, would have a CDR over 20 amps. Till further notice, any battery that is not rated along with these two rules could be assumed to be incorrectly rated.