when to recharge a 18650 battery ?????

[SlumDogUK]

a fully charged battery shows as 4.2 on the VVV battery check , at what level should you recharge it?
will it go all down to 0 ?

[ceekay27]

If I remember correctly it will go down to around 3.2, and then
it will just die anyway and you will need to charge it.

Once it needs charging it just wont let you vape anymore

[StevieD]

I recharge mine when they get to about 3.6 as I find the performance starts to drop off......I run mainly at 4.2 - 4.5V.

[chops]

I recharge mine when they get to about 3.6 as I find the performance starts to drop off......I run mainly at 4.2 - 4.5V.

+1

Occasionally it goes a little lower before I really notice the drop off but usually 3.7 - 3.6v and the vapour is affected drastically at 4.2v.

[JohnEAngel]

definitely by 3.5 for me.  it all depends on the integrity of each battery as well as the device.  mine have never made it to 3.2. 

[Vapor_Trails67]

I've gone down to about 3.1-3.2 purposely just so I could watch the led screen flash and then die But I agree with the others in that once you get around 3.4 or so the vape really drops off.

[blindsoup]

I recharge mine when they get to about 3.6 as I find the performance starts to drop off......I run mainly at 4.2 - 4.5V.

Me too, exact same way.

[StarGeezer]

I recharge mine when they get to about 3.6 as I find the performance starts to drop off......I run mainly at 4.2 - 4.5V.

This, precisely. Once the cell drops below 3.6v, the performance plummets quite a bit. With a DCT, I usually run around 3.8v.

[PEneoark]

I swap batteries when the thing hits 3.6 or 3.7.