Battery Safety Guide


So, you are worried that your battery will explode. While it is entirely possible to push a battery far past it’s limit and potentially cause a serious boom, following a few simple tips should keep you vaping happily and safely.

Decapitated_ni-mh_battery

But first we need to take a second to understand what can cause a battery to “vent” and what exactly “venting” is. All batteries have a maximum continuous discharge rating. This number indicates how much energy (measured in amps) the battery can output safely. The higher the number the more likely it is that you will NOT overload the battery.

Batteries vent when they are pushed past their limit and become too hot. Venting is when hot gasses escape from the battery housing. If the gasses have no where to go (eg. A mech mod with no vent holes), you will be holding what is essentially a pressure bomb.

10a 0.42ohm*
15a 0.28ohm*
17a 0.24ohm*
20a 0.21ohm*
22a 0.19ohm*
25a 0.17ohm*
27a 0.15ohm*
30a 0.14ohm*

So how do you know if you are using your battery safely? To get a good idea, you just need to know what the discharge rate of your battery is and what resistance your coil(s) are putting up. The table to the left contains a general outline of some common discharge ratings and the corresponding minimum safe* resistance.

*This is the absolute minimum resistance, we would not recommend going this low. This leaves no margin of error to fall back on if something goes wrong. We suggest building to at least 0.1ohm above the minimum limit to give some extra headroom.

If you would like to get more exact, model specific discharge information, you can head over to SteamEngine.org for a detailed battery drain calculator.

Now that we know about the maximum continuous discharge rating lets take a look at some other general battery safety tips.

Make sure the plastic wrapping on your battery is 100% intact, any tears or rips especially around the contacts can cause a short circuit.
If your battery or mod feels hot (hotter than your own body temperature) stop using it right away and let it cool down. If it does not cool down or continues heating up quickly, stop using and dispose of it right away.
Use and ohm reader to check the resistance of your coils before using them. If you have a regulated mod that has a built in ohm reader it is still important to double check. If your device is not reading the resistance correctly it can cause the battery to work harder than it needs to. Make sure you check your coil regularly for short circuit, you can tell you have a short if your resistance drops unexpectedly.
In a device that takes more than one removable battery always “marry” them. For instance if you just got a mod that takes 2 18650’s make sure you use 2 NEW batteries for it and always use/charge them together. This will ensure that the batteries wear evenly and that one battery is not working harder than the other. NEVER USE BATTERIES WITH UNEVEN CHARGE LEVELS.
Don’t ever leave your batteries or your device in a hot car for an extended period.
Always store your batteries in a plastic or rubber container in which the batteries can not move or contact each other or any other metal.
If your battery vents, even a little bit, it is no longer safe to use.
Use a high quality charger to ensure that your batteries are not over charged.
Do not charge your batteries when you are not able to monitor the charger.
When it comes time to dispose of your old or damaged batteries, remember it is illegal in the US, not to mention unsafe, to just throw them in the garbage. Check online for your communities closest recycling facilities.

At the end of the day, just remember, if something seems sketchy, it probably is. When you are holding a potential pressure bomb inches away from your face it is always better safe than sorry. If you have any questions about your battery or battery safety in general please don’t hesitate to reach out to us!

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