Batteries sold at DIY store counters, grocery stores, discount outlets, and in dollar shops are usually regular household types found in children’s toys, CD players, and remote control cars. Vape mod batteries are not designed specifically for these e cig devices — they can be used in flashlights and laptops — but they are still special batteries and their various qualities should be known to you before choosing both a vaping device and a compatible cell or cells.
In particular, we are going to look at the 18650 version. When you buy a mechanical mod like the SMOK Magneto, it accepts three types of batteries, all of them 18-series.
Their numbers (18350, 18500, and 18650) represent dimensions by width and length, the 18650 being the longest among them. These batteries are rechargeable.
Although lots of chemical symbols are used to represent battery chemistry, Lithium Ion is the primary type, but it’s not the safest. Many experts turn to LiMn batteries.
They handle stress better than LiIon cells which means they don’t have to be protected, in which case it will be shorter than the regular, protected cell. LiMn battery titles are prefaced with “IMR” so they are easily identified.
This protective element I am talking about is what stops a device from over-charging if you leave it in the charger too long. Discharge cut-off is built into non-IMR batteries and can also be built into IMR cells depending on your choice of model. Your best safety routine involves the use of recommended batteries and a high-quality charger.
Vaping experts often talk about battery safety and they take it very seriously, even though many vapers (having never experienced a battery explosion) think they are exaggerating their concerns.
A battery can explode: in an un-vented box mod, in a mod which fails to vent automatically as it should do, inside an unprotected or malfunctioning device, when it is stressed by too-low resistance and extra-high watts, or if it is pulsed and not allowed to cool properly.
This event can and has really happened in the past. A battery is tiny but has the power of a small bomb which can cause substantial damage, including physical harm or death to the user or anyone close by.
This is why you should only buy trusted brands of 18650 batteries. Suggested names include Sony, Samsung, Sanyo, Panasonic, and EFest. Pundits do not recommend purchasing sub-standard (anything else) batteries even if the price is compelling.
Also, check the dates on your batteries. If you can’t check them with a meter, recycle them if their origins or ages are unknown to you. Always recycle your batteries. Lithium is a dangerous substance which should not be dumped into your regular garbage.
Measurements of Batteries
As noted above, your battery size is dictated by at least one thing: whether it is protected or not. Another feature to look for is the shape of your positive contact. It could be flat or domed. This will affect the sort of device you can use because if there is supposed to be a dome and your battery does not have one, internal contacts will not connect unless they are spring-loaded.
Most battery housings make allowances for this variation, but read the specifications for your vape mod carefully. Adjustable products bring fittings and contacts closer together or spread them apart to make room in telescopic e cig mods.
Continuous Amp Output
Returning to the issue of safety, the highest safe output for continuous vaping at sub-ohms is around 10A, although many cells can handle a maximum of 20 amps or more. Many vapers are pushing the limits of safety by trying to operate at a continuous 20A output and at extremely low resistance: below 0.5 ohms.
Although there are ways to safely use a serious sub-ohm atomizer, you have to realize the inherent dangers in trying to do so at high watts, especially if you over-vape. Even a protected battery could still fail.
Protect yourself in an additional way by purchasing an adjustable box mod containing a reliable, built-in microchip. The Evolv is highly rated and only goes up to 40W. This might not seem like enough for some vapers, but Evolv DNA 40 mods can handle 0.1-ohm atomizers, just at lower temperatures than Yihi and other chips. Performance-wise they are comparable yet safer at the same time.
When you are researching box mods and other devices using 18650 batteries, the vendor usually indicates which batteries are recommended for the purpose. They usually provide at least two suggestions and carry those cells in their shop or warehouse.
This advice is designed to prevent damage and injury caused by a combination of unsafe batteries and unregulated, high-watt mods. Conduct thorough research into the pros and cons of various batteries and the risks you are undertaking as a sub-ohm vaper before selecting an 18650 device and battery.