Hi guys, I just bought a lava tube and vamo, but have noticed some batteries I have mainly ones with pcbs don't work I think the unprotected ones do, but I'm not really sure there unprotected, anyhow can anyone recommend some really good batteries for these I see a lot of wefts, Panasonic and Sanyo reviews as well as ur aw, but which is best and safest, with good capacity, I use 8-10w on my vamo, and 4.2v on my lava, with 2.6 ohms coil?? Happy vaping