Everything about batteries

what you need to know before and after purchase

Everything about batteries

what you need to know before and after purchase
In this article we will talk about batteries. It’s going to be one of those "You should know this" articles, so if you come across anything that seems obvious — don’t be mad. This article will be eye-opening to some. And it might save someone a few fingers.


The types and differences

Let’s start with the basics. Most devices use 18 650 batteries. What does this number mean? 18 mm is diameter, 65 mm is length. The zero at the end means that the battery is cylindrical. Makes sense.

There’s also a bunch of non-standard batteries. For example, the tiny 18 350: they once came with miniature 40W mods. Or the fat 26 650 — it occasionally gets used in custom mech mods, and iJoy’s Limitless LUX 215W runs off of it, but these are exceptions to the rule.

As 20 700 batteries are now coming into fashion, both box mods (for example, IJOY Captain PD270 234W) and mech mods (Roundhouse by Kennedy Vapor) have been coming out. However, this new format hasn’t received sufficient distribution so far, and there just aren’t that many 20 700 batteries around yet. One day they may change the market. Or not.

There are also devices with built-in batteries, and they have their own advantages — for example, you don’t need to buy them separately! But this article is not about them.


What to look for when buying

First, pay attention to the discharge rate. It is indicated in amperes (A). Most batteries actually have two parameters on them: peak discharge and maximum continuous discharge.

You can safely ignore peak discharge, as this type of current is not operating. What matters is the continuous one.
Peak discharge is like stress for a person. You can operate on caffeine without sleep or food, but doing this for a long time won't do you any favors. The same is with batteries.
Peak discharge is like stress for a person. You can operate on caffeine without sleep or food, but doing this for a long time won't do you any favors. The same is with batteries.
We care about the maximum continuous discharge current. It is measured in amperes and shows the current that the battery can give without damage to itself.

Choose batteries with a continuous discharge rate of 20A or higher. They can be used in box mods and mech mods alike. For cigarette-type draw, weaker batteries will suffice, but in general 20A and higher is the optimal safe bet for modern devices. Such batteries are called high drain. You shouldn’t use batteries with a low current discharge. They won’t be able to handle the load and can become unstable, catch fire or even explode.

Another parameter is voltage. It is measured in volts (V). Not a lot to choose from here — 3.7V is the optimal voltage. A freshly charged battery gives 4 or even 4.2 volts, but then drops back down to 3.7V.

When a battery is drained, its voltage drops rapidly. The amount of vapor gets noticeably reduced. At this point, it’s best to start charging your batteries immediately: if you continue to abuse them, their capacity will start to diminish. Remember the number 3.2 and never let your batteries go below this mark. Charging above 4.2V, however, is also discouraged.

Now on to capacity. This is the figurative volume of a battery. Capacity is measured in ampere-hours (mAh). The higher the capacity, the longer a battery keeps the charge. This indicator should also be considered when shopping.
Remember that batteries can't have both high capacity and good discharge, so try to find a healthy middle. Or decide what's more important for you and base your purchase on your personal requirements.
Remember that batteries can't have both high capacity and good discharge, so try to find a healthy middle. Or decide what's more important for you and base your purchase on your personal requirements.
Proper maintenance

It’s worth investing in a battery charger to prolong your batteries' life (even if your mod has a micro-USB port). Without going into details, they give your batteries a better charge and don’t shorten their lifespan as much. The charger is bought separately, costs around € 20, and will serve you for years to come. The standard options are Nitecore (for example, the i4) and Efest (LUC V4 or V6). Nitecore can also charge a plethora of other battery types; this has nothing to do with vaping, but can be useful otherwise.

If you charge via micro-USB no matter what, try at least not to vape while charging. Box mod chipsets don’t like this, and there’s a chance that your mod will fail or even explode. There have been instances.

Treat your batteries with care so as not to worry about their well-being — don’t drop them and don’t knock them against each other. We’ve already published an in-depth guide called "Why batteries explode and how to avoid this".

Yes, we already hear the logical question: "Okay, I don’t get it, which batteries do I buy?". Get the Sony VTC5A, they’re good. Or Samsung 25R, these are also not bad, and the price is slightly lower. Tesiyi 40A are great batteries, but it’s near impossible to find them for sale. In general — make sure that the continuous discharge rate isn’t lower than 20A, don’t buy clones, and you’ll be just fine.
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