Review of the XL VV mod, available at YoVapeo.
This is a very small and lightweight unit that can be very handy. The manufacture specifies that it has a 950 mAh internal battery but it’s really 850 mAh. With 510 threads, it isn’t compatible with all 510 material, mainly because the connection sits inside of the unit. Therefor you’re restricted to what you can “insert” on it.
With 3 voltage modes, 3.4V – 3.7V and 4.0V, the XL VV performs well and gives a good vapor. The cartos are a bit “leaky” and you have to be caution about that.