Everything You Need To Know About 18650 Batteries

The 18650 cells are lithium-ion rechargeable batteries. It has a voltage of 3.7V and has a power rating of 18-mAh to 3500mAh. These generally work in a voltage range of 2.5volyts to 4.2 volts and have a nominal voltage of 3.7 volts. 

The Samsung 18650 battery is available in various sizes, including 1170 cubic mm, 700 cubic mm, and 467 cubic mm. The only drawback of these batteries is that they can’t be used in all AA devices unled they support both 3.7 and 1.5-volt batteries. These are also available in sizes as big as 1550 cubic mm. 

Protected Vs. Unprotected Batteries

The Samsung 18650 batteries have an electronic circuit embedded in the cell packaging that helps protect the cell from being overcharged, over-discharged, and short-circuited. The protected batteries are safer options as they don’t burst or start a fire in the pocket. 

T%he unprotected batteries are cheaper, but it is not recommended for use. These should only be used for devices where the charging is monitored externally. If the battery looks corroded or is leaking, you must get rid of them immediately to ensure that it doesn’t cause any damage. 

Ratings And Specifications

Let us look at the ratings and the specifications of the top 18650 batteries available online.

Continuous Discharge Rating 

It is a rating that the most reputable electronic manufacturers use, and it is used to compare the battery discharge capacity. Accurately rating signifies the current that the battery can discharge safely at a continuous rate without any damage. The maximum rating is the maximum current that the battery can supply for short intervals. The rating is an essential parameter when considering a battery. It is necessary to always check the CDR of the battery. 


The battery’s capacity is calculated in terms of mAh, and it signifies the battery’s running time. One mAh is equal to the charge transferred by the steady current of one milliampere flowing for an hour. Reputable manufacturers like Samsung have a pattern as they always have a trade-off between CDR and capacity. 

Top Three 18650 Batteries

Here are some of the top 18650 batteries from the top brands.

Samsung 20s

This Samsung 18650 battery has a 30-ampere battery and comes with a 2000mAh capacity. It has a high output, and it is the only 18650 battery that can be used safely in the range of 70 to 80 watts on regulated mods. These are the best options if you search for a battery for your single battery mod with a medium to high power sub ohmic tank. 

Samsung 25R

These batteries have gone through various tests and experiments over the years and are one of the safest options available. They are available in two editions that offer similar performance. The green wrap 25R has a slightly longer life cycle than the blue one. These are not very expensive and offer great performance and are also very easy to find. 

Sony VTC

It comes with a 3000 mAh capacity and is a reliable product. It is ideal for low wattage ranges due to its limited amp draw. It is best suited for mouth-to-lung vaping, and if you require raising the wattages, you can easily pair two VTC6s on a dual-battery-regulated mod. 

Conclusively these are a few points that you need to consider while purchasing your 18650 batteries for vaping. 

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