The Sony VTC4 has been heralded as one of the safest 18650 on the market.  It uses safe chemistry and has a high 30A continuous discharge limit that will safely operate most sub-ohm builds.

2100 mah for a long lasting vape experience.

We recommend this cell for both regulated and unregulated box mods (with mosfet) and for sub-ohm vaping on suitable mechanical mods with an atomizer load between 1.0 ohm and .15 ohm.  

The Sony VCT4 is one of the safest batteries you can use in your mechanical mod or box mod.  

However;

Make sure you understand ohm's law and battery safety when doing sub-ohm builds and always be careful, using an ohm's law calculator is a great way to stay safe when you are starting out.  

Never press your battery's CONTINUOUS discharge level and never used damaged batteries or batteries that are hot to the touch.

We have this post in our blog about 18650 batteries, their different types of chemistry and how to keep them safe.